400 Funny Birthday Wishes for Nephew: Hilarious Messages Inside

Looking to make your nephew laugh on his birthday? This collection of 400 funny birthday wishes for my nephew is packed with hilarious messages to brighten his special day. 

Whether he’s a little guy or all grown up, you’ll find the perfect mix of silly, playful, and witty lines to make him smile. 

From goofy jokes to cheeky one-liners, these wishes will help you celebrate with laughter and love. Dive in and pick the funniest message that fits your nephew’s awesome personality!

Funny Birthday Wishes for Nephew

• Happy birthday, nephew! You’re one year closer to being as cool as your uncle… but not quite there yet.
  
• Congrats on aging like a banana – fast and funny!
  
• Happy cake day! Try not to eat it all before blowing out the candles.
  
• Another year older, another excuse to act like a kid. Enjoy!
  
• Don’t worry, nephew. At your age, the wrinkles are still optional.
  
• You’re growing up so fast, but thankfully not outsmarting me yet!
  
• Happy birthday! Now go be the legend you pretend to be online.
  
• Wishing you a birthday full of cake, fun, and weird dance moves.
  
• You’ve leveled up! Sadly, your sense of humor hasn’t.
  
• Smile! It’s your birthday, and you’re stuck with me all day.
  
• You’re one step closer to being a cool adult… or just weird.
  
• Don’t worry about getting older. You’re still my goofy little guy.
  
• Another year older, but still asking for video games. Classic you!
  
• Happy birthday! May your jokes be bad and your cake be big.
  
• Hope your birthday is as awesome as you pretend to be!
  
• You’re aging like milk left out in the sun – still funny, though!
  
• You’re not getting older, just more qualified to tell dad jokes.
  
• Time to party like a rock star – but only until 9 PM!
  
• Happy birthday! You’ve officially reached the “nap is life” stage.
  
• May your birthday be filled with laughter, cake, and zero responsibilities.
  
• You’ve survived another year! Must be those superhero genes.
  
• Don’t count the candles… you’ll need a calculator.
  
• Happy birthday to the nephew who still thinks farts are funny.
  
• You’re not older, you’re just more “limited edition.”
  
• Wishing you a day full of surprises… the good kind!
  
• Birthdays are nature’s way of saying eat more cake.
  
• You’re growing up so fast, even your jokes are old now.
  
• May your gifts be cool and your chores be forgotten today!
  
• Happy birthday! Now go out and embarrass yourself in style.
  
• Being your uncle is hard… you keep stealing my spotlight!
  
• Here’s to more silly moments and less adulting!
  
• You’re smart, funny, and awesome – must run in the family.
  
• Cake calories don’t count today. Enjoy!
  
• Happy birthday! May your awkward photos last forever.
  
• You’re the only person who can eat 3 slices of cake and still ask for pizza.
  
• Getting older just means more reasons to party.
  
• Congrats, you’ve unlocked another year of weirdness!
  
• Birthday rule: do whatever you want (just don’t tell your mom).
  
• Life’s short – eat the cake, skip the homework!
  
• You’re the coolest nephew I know… which isn’t saying much, but still.
  
• Happy birthday! May your cake be taller than your expectations.
  
• Another year to keep annoying your siblings. Cheers!
  
• Enjoy your big day – your age is catching up with your shoe size.
  
• Keep being silly and awesome, that’s your superpower.
  
• Birthday hug incoming… prepare for total embarrassment.
  
• Don’t worry about age – you’re still way younger than me!
  
• May your WiFi be strong and your birthday full of memes.
  
• You make growing up look almost fun!
  
• Happy birthday, nephew! You make weird look cool.
  
• If laughter adds years to your life, you’re immortal by now.
  

Hilarious Messages for Nephew’s Birthday 

• You’ve reached the age where naps feel like birthday gifts!
  
• Happy birthday! Now blow out those candles before they melt the cake.
  
• You’re officially too old to blame your mess on the dog.
  
• May your cake be moist, your jokes funny, and your presents epic.
  
• Today is the only day I won’t make fun of you… just kidding.
  
• Congratulations on surviving another year with your crazy family!
  
• Happy birthday! May your smile be wide and your phone fully charged.
  
• Hope your birthday is more exciting than your online classes.
  
• Don’t grow up too fast – we need someone to blame stuff on!
  
• Have a birthday as cool as your dance moves… or cooler, please.
  
• You’re the only person I know who celebrates aging with sugar and glitter.
  
• May your birthday be filled with laughter and zero math homework.
  
• Congrats, you’re now legally allowed to act like a goofball… forever.
  
• Another year of being smarter than your video game character.
  
• Wishing you a day of fun, gifts, and 0 chores.
  
• Remember, nephew: birthdays are just nature’s way of making us eat cake.
  
• I was going to get you something amazing, but then I remembered… I’m broke!
  
• You light up our lives – and also break things.
  
• Happy birthday to the king of silliness and snacks.
  
• Today, you’re the boss… tomorrow, it’s back to mom.
  
• May your jokes be funny and your cake be chocolate.
  
• You’re the only person who thinks burps are birthday songs.
  
• Happy birthday! Keep being awesome and weird.
  
• Time to celebrate like it’s your bedtime – never!
  
• You’ve got brains, charm, and… socks with holes.
  
• You’re not getting older, just more epic.
  
• Congrats on being the favorite (don’t tell the others).
  
• May your day be as weird as your TikToks.
  
• Wishing you a cake-filled, stress-free, chore-less birthday.
  
• You’re the reason our family gatherings are never boring.
  
• Today, eat like a beast and sleep like a panda.
  
• Your energy is unmatched – like your messy room.
  
• Happy birthday! Keep being loud, proud, and hilarious.
  
• You’re one of a kind – and that’s probably a good thing.
  
• May your gifts be plenty and socks be few.
  
• Keep growing up, just not too seriously.
  
• Happy birthday to the MVP of mischief.
  
• Cake today, vegetables never!
  
• If birthdays were a sport, you’d be a champion of fun.
  
• Your ability to create chaos is unmatched.
  
• Celebrate like no one’s watching… but record it just in case!
  
• Happy birthday to the nephew who always makes us laugh.
  
• You’re getting better, not older… okay, both.
  
• May your day be as bright as your phone screen.
  
• Cake is temporary, but birthday memes last forever.
  
• If laughter is medicine, you’ve overdosed us all.
  
• Birthday rule: no school, no chores, no sharing.
  
• You’re cooler than ice cream and twice as sweet.
  
• Let’s party like it’s your bedtime ignored and wild!
  
• Happy birthday! The world is better with your weirdness in it.

Silly Birthday Greetings for Nephew 

• You’re not old, you’re just more marinated.
  
• Wishing you a birthday filled with loud laughs and louder burps!
  
• May your day be full of cake and your face full of frosting.
  
• You’re officially allowed to wear mismatched socks today.
  
• Happy birthday! Now go do something wildly goofy.
  
• Who needs candles when your personality’s already lit?
  
• You’re the only person who celebrates with cookies in both hands.
  
• Keep being silly – it’s your best skill!
  
• May your day be full of snacks, naps, and no rules.
  
• You’re a walking cartoon – and we love it.
  
• Hope your birthday is messier than your hair.
  
• Stay wild, stay weird, stay awesome.
  
• Happy birthday to my favorite little troublemaker!
  
• You’ve got the moves like jelly and the charm like glitter.
  
• Keep laughing, keep playing, and keep forgetting where you put your shoes.
  
• You’re the only one who can turn a simple cake into a disaster.
  
• Party hard, but don’t forget your socks.
  
• You’ve earned a day of cake, chaos, and cartoons.
  
• Celebrate like a ninja squirrel on a sugar rush.
  
• Your giggles are contagious – keep spreading the silly.
  
• Blow out the candles, then blow everyone’s minds with your dance moves.
  
• You’re officially the president of Giggle Town today!
  
• Don’t worry about getting older – just get funnier.
  
• No homework, no veggies, just fun today!
  
• May your cake be bigger than your problems.
  
• Wear a party hat and rule the world today!
  
• You’re sweeter than candy and twice as hyper.
  
• Happy birthday to the superhero of silliness.
  
• Today, you’re allowed to be as weird as you want.
  
• Stay funny, stay loud, stay YOU.
  
• You’re the reason our family photos are always interesting.
  
• May your laughter be loud and your cake be huge.
  
• If birthdays were games, you’d be in the silly league.
  
• Hope your jokes are funny… this time.
  
• Today is all about you and your amazing weirdness.
  
• Let your inner clown run free – it’s your day!
  
• You’re the perfect mix of sugar, spice, and total goof.
  
• Life’s a circus, and you’re the main act today!
  
• Celebrate like a monkey with a banana cake!
  
• You’re a giggle machine in sneakers.
  
• May your birthday be louder than your toy collection.
  
• Don’t grow up – it’s a trap!
  
• Happy birthday! Go dance like no one’s watching.
  
• Stay sassy, silly, and snack-loving.
  
• May your cake have more sprinkles than sense.
  
• You’re the cartoon character I never knew I needed.
  
• Forget rules – today you’re the boss of fun.
  
• Laugh louder, play harder, and eat more sugar.
  
• You were born to be wild… and funny!
  
• Happy birthday, nephew! Now go make some harmless trouble.

Laugh-Out-Loud Birthday Wishes for Nephew 

• Happy birthday, nephew! You’re growing up so fast… and so is your list of bad jokes.
  
• You’re not old yet, but you’re definitely not young enough to bounce off furniture anymore.
  
• Hope your birthday is full of cake, laughs, and zero responsibilities.
  
• Happy birthday! You’ve officially survived another year of my teasing.
  
• May your birthday be filled with epic fails… as long as they’re funny ones!
  
• You’re the only person who can trip over air and still make it look cool.
  
• Congrats on getting older without getting wiser!
  
• Wishing you a day of nonstop laughter and very little adulting.
  
• Your birthday party should be wild… or at least mildly chaotic!
  
• Birthdays are nature’s way of reminding us to eat cake and act like children.
  
• Happy birthday, nephew! May your jokes be better than your dance moves.
  
• You’re so cool, even your candles are afraid to burn out.
  
• May your birthday bring more laughs than last year’s weird haircut!
  
• You’re not just older today, you’re officially weird-er!
  
• Cake, balloons, and chaos. Yep, it’s your kind of day!
  
• Happy birthday! You’re now qualified to start blaming things on “old age.”
  
• Another year closer to mastering the art of pretending to be mature.
  
• You age like a meme – funnier every year!
  
• Happy birthday! Your sense of humor is your best gift to the world.
  
• Hope your birthday is as epic as your video game skills… or at least close.
  
• You deserve a day full of cake, fun, and fewer embarrassing moments.
  
• Have a birthday so fun even your cake laughs!
  
• You’re not older, just more experienced in being ridiculous.
  
• May your birthday be filled with smiles, pizza, and perfectly timed burps.
  
• Congrats on being the funniest nephew – and also the loudest!
  
• Age gracefully? Nah, crash into it with a cupcake in hand!
  
• Your birthday should be celebrated with noise, mess, and extra frosting.
  
• Here’s to another year of wild stories and weird decisions!
  
• Birthday tip: eat cake first, ask questions never.
  
• Laugh until your cheeks hurt – and then laugh some more.
  
• Happy birthday! You bring joy, chaos, and giggles wherever you go.
  
• Let’s celebrate your birthday like it’s a food fight.
  
• Warning: birthday hugs from me may come with tickles!
  
• You’ve officially outgrown your shoes… and your excuses.
  
• Happy birthday to the nephew who never stops making us laugh.
  
• You’re the reason our family group chats stay hilarious.
  
• Hope your day is full of belly laughs and awkward dance moves.
  
• Your birthday goal: more jokes, less chores!
  
• You make getting older look hilarious.
  
• Cake + you = total comedy show.
  
• You’re one year older and still the class clown. Keep it up!
  
• Happy birthday! Just promise not to prank me today.
  
• May your day be packed with fun and flavored with silliness.
  
• The party doesn’t start until you show up with your goofy grin.
  
• You were born to make people laugh. Never change!
  
• You’ve always had the gift of humor – especially when you don’t mean to.
  
• If being funny was a job, you’d be CEO by now.
  
• Have a birthday so fun even your phone can’t keep up!
  
• You’re not just another year older, you’re another year funnier.
  
• Laugh big, eat cake, and enjoy being the funniest person in the room today!

General Happy Birthday Wishes To Nephew

• Happy birthday to my amazing nephew! Wishing you a day full of fun and happiness.
  
• Hope your birthday is as awesome as you are!
  
• Wishing you the best year ahead, full of love, success, and surprises.
  
• Happy birthday to the nephew who brings joy wherever he goes.
  
• You’ve always been special – today just makes it official again!
  
• Another year older, another reason to celebrate the great person you are.
  
• May your birthday be bright, bold, and beautiful.
  
• To my awesome nephew, may your dreams come true this year.
  
• Have a fun-filled, laughter-packed, and gift-loaded birthday!
  
• You make being a nephew look so cool.
  
• Happy birthday! The world is better because you’re in it.
  
• Watching you grow has been one of life’s greatest joys.
  
• You’re not just my nephew, you’re a part of my heart.
  
• Here’s to many more amazing memories together.
  
• May your day be full of love and your year full of success.
  
• Happy birthday to the one who lights up every family gathering!
  
• You are destined for greatness, nephew. Never stop dreaming big.
  
• Keep shining bright and being your awesome self.
  
• Today is all about celebrating you and the joy you bring!
  
• Cheers to another year of being the best nephew ever!
  
• Wishing you a birthday that’s just as fantastic as you are.
  
• Happy birthday to my favorite guy in the whole wide world.
  
• To the coolest nephew around, have the coolest birthday ever!
  
• You always make us proud. Here’s to celebrating YOU today!
  
• No matter how tall you get, you’ll always be my little buddy.
  
• Happy birthday! Go make some unforgettable memories today.
  
• May your birthday be full of smiles, sweets, and silly moments.
  
• Sending you all the hugs and high-fives in the world today!
  
• Your laughter, kindness, and energy are gifts to us all.
  
• May your special day be everything you hoped and more.
  
• You’re growing into someone amazing – and it shows!
  
• Happy birthday to the nephew who means the world to me.
  
• Today is your time to shine even brighter!
  
• May the year ahead bring adventures, learning, and joy.
  
• You’re one in a million, nephew. Happy birthday!
  
• Here’s to more love, laughter, and awesome adventures.
  
• Keep chasing your dreams and living with passion.
  
• Happy birthday! May every wish you make come true.
  
• Enjoy every moment today – you deserve it all.
  
• A big hug to my wonderful nephew on his big day!
  
• You’ve always had a special place in my heart.
  
• May this year bring you new friends, new hopes, and endless joy.
  
• Hope your celebration is as fun as your favorite video game!
  
• Have a birthday that’s full of everything you love.
  
• You bring light and joy wherever you go.
  
• You’re not just growing older, you’re growing greater.
  
• Never stop being the kind, funny, and loving person you are.
  
• Happy birthday! You’re a true blessing to our family.
  
• To my smart, brave, and awesome nephew – I’m so proud of you.
  
• Wishing you all the happiness in the world today and always.

Birthday Wishes For Nephew From Aunt 

• Happy birthday to my handsome, funny, and totally lovable nephew!
  
• From your favorite aunt – I’m sending hugs, cake, and love your way.
  
• I may not be your mom, but I’ll spoil you like one today!
  
• Wishing my sweet nephew a day filled with happiness and candy.
  
• You’ll always be my little buddy, no matter how tall you get.
  
• Happy birthday, my amazing nephew! You’ve stolen this aunt’s heart forever.
  
• I’ve watched you grow into a kind, strong, and funny young man.
  
• Your aunt loves you more than words can say.
  
• May your birthday be full of magic and your year full of blessings.
  
• Watching you grow is one of my greatest joys.
  
• You’re not just my nephew – you’re like my second son.
  
• I’m so proud to call you family and friend.
  
• May your day be filled with love, laughter, and cake.
  
• Happy birthday to my favorite troublemaker.
  
• You have a heart of gold, and I’m lucky to be your aunt.
  
• I hope your birthday is as fun and fabulous as you are!
  
• Never forget how much your auntie adores you.
  
• To my little star – keep shining bright.
  
• I’ll always be in your corner, cheering you on.
  
• You bring sunshine into my life every day.
  
• From toy cars to real ones – watching you grow has been amazing.
  
• I hope today brings everything you’ve been wishing for.
  
• Wishing you a day of endless joy and sweet memories.
  
• Happy birthday to the boy who made me the proudest aunt alive.
  
• You’ve always had a special place in my heart.
  
• Keep being brave, kind, and curious – the world needs more of you.
  
• Here’s to many more birthdays together!
  
• I hope your smile never fades, especially today.
  
• You make me laugh, smile, and cry happy tears.
  
• May your birthday be filled with everything you love most.
  
• Every birthday of yours reminds me how fast you’re growing – but always my baby!
  
• Your laughter is my favorite sound.
  
• Auntie’s got your back, always and forever.
  
• Have the happiest, goofiest, most amazing birthday ever.
  
• You’re the reason I know what unconditional love feels like.
  
• Wishing you cake for breakfast and laughter all day.
  
• I’m sending the biggest hug ever from your favorite aunt.
  
• May you always stay true to the sweet soul you are.
  
• Happy birthday! Don’t forget to save me a slice of cake.
  
• You are one of life’s greatest gifts to me.
  
• Keep being awesome, because you’re seriously the best!
  
• Your birthday is a perfect reason for this aunt to brag about you.
  
• Love, laughs, and hugs – that’s my birthday recipe for you!
  
• I hope all your dreams begin to come true this year.
  
• Auntie’s boy deserves the best of everything – starting today.
  
• Your giggles have filled my life with love.
  
• You were born to do amazing things – I believe in you.
  
• Enjoy your big day, my sweet and silly nephew.
  
• May every moment of your birthday be picture-perfect.
  
• To my nephew: you are loved beyond words. Always.

Birthday Wishes For Nephew From Uncle 

• Happy birthday, champ! From your proud uncle who loves you big time.
  
• Watching you grow has been one of my greatest joys.
  
• You’re more than my nephew – you’re like a little brother to me.
  
• Have the most amazing birthday, filled with everything you love.
  
• Your smile brings happiness to our whole family.
  
• As your uncle, I’m always here for you – today and forever.
  
• Keep chasing your dreams and being the awesome kid you are.
  
• Today is your special day – let’s celebrate in style!
  
• You’ve grown into a fine young man, and I’m proud to be your uncle.
  
• Happy birthday! You make our family gatherings way more fun.
  
• Wishing you lots of laughs, gifts, and cake today.
  
• Never stop being curious and kind – that’s your magic.
  
• You’ve brought so much joy into our lives.
  
• May your birthday be filled with joy, just like you fill our lives with laughter.
  
• Uncle’s got your back no matter what.
  
• Happy birthday to the coolest nephew ever – from your coolest uncle.
  
• I hope your day is filled with smiles and adventure.
  
• You make every day brighter, nephew.
  
• Have an unforgettable birthday filled with games and goodies.
  
• Here’s to a year full of wins, fun, and excitement!
  
• You’ve always been my little buddy, and I’ll always be your biggest fan.
  
• Happy birthday! May your cake be big and your worries small.
  
• You’re growing fast, but you’ll always be my little guy.
  
• Uncle tip: always eat dessert first on your birthday!
  
• I’m so lucky to have a nephew like you in my life.
  
• Wishing you a birthday full of silly moments and sweet surprises.
  
• You deserve the best because you bring out the best in others.
  
• You’re smart, strong, and full of heart – just like your uncle!
  
• Happy birthday to the nephew who makes life more fun.
  
• Let’s make this birthday legendary!
  
• You’re becoming a real superhero in our eyes.
  
• Celebrate big, dream bigger, and laugh the most.
  
• From toy cars to real goals – I’ve seen you grow, and it’s amazing.
  
• You’re the kind of nephew every uncle hopes for.
  
• Life with you in it is a true adventure.
  
• Sending big birthday hugs and even bigger high fives!
  
• No matter how old you get, you’ll always be my little star.
  
• You’ve got so much greatness ahead – I can feel it.
  
• Your birthday is a perfect reminder of how lucky I am to be your uncle.
  
• Keep being awesome and stay true to who you are.
  
• Happy birthday! Let’s make some crazy fun memories.
  
• Watching you grow up is the best gift life has given me.
  
• Your laugh is the best sound in the world.
  
• To my favorite nephew – enjoy your big day to the fullest.
  
• Uncle advice: eat all the cake, worry later.
  
• I hope you always feel how loved and special you are.
  
• You’re strong, brave, and funny – just like your uncle.
  
• Let’s celebrate your birthday with fun, games, and tons of cake!
  
• You’re not just family – you’re one of my favorite people.
  
• Happy birthday from the uncle who’s always ready to party with you.

Funny Birthday Wishes For Nephew 

• Happy birthday! Time to party like your bedtime doesn’t exist.
  
• Congrats! You’ve leveled up… again!
  
• You’re not getting older, just becoming more of a troublemaker.
  
• I brought cake and jokes  hope you’re ready!
  
• You’re like a superhero, but with extra sugar.
  
• It’s your birthday, so eat cake like a boss.
  
• If age is just a number, then forget math today!
  
• Happy birthday! May your presents be cool and your socks match.
  
• Birthdays are nature’s way of saying, “Eat more sugar!”
  
• Blow out the candles before the fire alarm goes off!
  
• You’re the only kid I know who can make a mess and still get cake.
  
• Congrats! You’re now officially old enough to clean your room… maybe.
  
• May your birthday be 99% fun and 1% cleanup.
  
• Just remember – you’ll always be younger than me.
  
• Here’s to cake, chaos, and your loudest laugh yet!
  
• You’re growing up so fast, it’s almost scary!
  
• Happy birthday! Now go do something silly – it’s tradition.
  
• The best nephews get cake. The funniest nephews get extra!
  
• You’re aging like a legend… with a messy room.
  
• Wishing you lots of fun, laughs, and zero vegetables.
  
• Life’s too short – so eat dessert twice today.
  
• You’re the only person who can wear a crown made of candy.
  
• Don’t worry, birthdays are like farts – loud, funny, and over fast.
  
• Hope your birthday is as cool as your dance moves (or cooler).
  
• You’re one step closer to becoming your dad – be careful!
  
• Happy birthday to the world’s funniest nephew – and messiest too.
  
• You’re so awesome, even your cake can’t handle it!
  
• Today you get to do whatever you want – don’t waste it on homework.
  
• Make sure your birthday is wild enough to talk about all year!
  
• If there were an award for funniest nephew, you’d win – by accident!
  
• Hope your birthday is full of silly faces and belly laughs.
  
• You’re the only person I know who makes trouble look adorable.
  
• May your day be more exciting than a snow day!
  
• You’re smart, funny, and slightly weird – the perfect combo!
  
• Celebrate like nobody’s watching – and then blame the noise on someone else.
  
• You’re the only one who thinks burps are birthday songs.
  
• Keep being your awesome, funny self – it’s working for you!
  
• Today you’re allowed to act even goofier than usual.
  
• You don’t get older, you just get louder.
  
• May your party be wild and your jokes even wilder.
  
• You’ve earned another year of cake and chaos!
  
• Here’s your birthday gift: permission to be extra silly all day.
  
• You’re the only nephew I know who can break things and still get hugged.
  
• Have a birthday full of candy, cartoons, and craziness!
  
• If you were a dessert, you’d be a cupcake with extra sprinkles and a side of jokes.
  
• I was going to write something meaningful… but jokes are more fun!
  
• Happy birthday! You’re the reason we can’t have quiet parties.
  
• You’re one of a kind – and that’s probably a good thing.
  
• Make a wish, blow out the candles, and then eat them all.
  
• Happy birthday! Now go do something ridiculous… because why not?

Funny Birthday Wishes for Nephew on Wishonbirthday

• Happy birthday, nephew! You’re growing older, but not wiser.
  
• Congrats on being one year closer to back pain!
  
• Another birthday? You’re catching up to me… in wrinkles!
  
• Cake, candles, and chaos. Must be your birthday again!
  
• I was going to get you a cool gift, but then I remembered your taste!
  
• Don’t grow up too fast… it’s a trap.
  
• Happy birthday! You officially qualify for an adult nap.
  
• I hope your day is as awesome as you think you are!
  
• Getting older is mandatory, growing up is optional.
  
• May your hairline stay strong and your cake be big.
  
• Happy birthday, nephew! You’re not old… just well-experienced.
  
• Birthdays are like sneezes. The older you get, the more they surprise you.
  
• Congrats! You’ve leveled up in life… without any cheat codes.
  
• Another year, another reason to blame cake for everything.
  
• You’re my favorite nephew… don’t tell the others.
  
• May your day be filled with cake and less responsibility.
  
• I see you’re still pretending to be mature. Nice try!
  
• Your birthday is nature’s way of saying, “Eat more cake.”
  
• Hope your day is as epic as your video game wins.
  
• Keep aging like a meme. Unforgettable and slightly weird.
  
• Don’t worry about getting older. You’re still younger than me!
  
• Another birthday? Time flies when you’re this cool.
  
• May your candles outnumber your responsibilities.
  
• You were born to stand out… and drive us all crazy.
  
• Happy birthday! Still not taller than your ego.
  
• I’d make a joke about your age, but I forgot it.
  
• If life were a game, you just unlocked the awkward adult level.
  
• Cake calories don’t count today. That’s the rule.
  
• Remember, birthdays are just nature’s way of telling you to eat more.
  
• You’re now at the perfect age to blame everything on “stress.”
  
• Happy birthday, nephew! At your age, the candles cost more than the cake.
  
• May your day be full of laughter and zero adulting.
  
• I got you a gift… it’s called my awesome presence.
  
• You’re the coolest nephew… for now. Competition is fierce.

Conclusion

No matter your nephew’s age or personality, a funny birthday wish is always a great way to make him smile and feel loved. From goofy jokes to clever one-liners, these 400 hilarious messages are perfect for adding laughter to his big day. 

Whether you’re his cool uncle or fun aunt, these wishes show your playful side while celebrating the awesome guy he is. So go ahead, pick the funniest message and make his birthday one to remember with giggles, good vibes, and lots of love!