31+ Best Funny Birthday Wishes for Younger Sister (2024)

Looking for funny birthday wishes for younger sister? I am happy your search has come to an end.

In this article, I have written for you some of the best funny birthday wishes for younger sister that you can send to her.

Read: Blessing Birthday Wishes for Sister

Funny Birthday Wishes for Younger Sister

I now have to stop making age jokes on your birthdays; you are at an age where it’s not funny anymore. Happy Birthday, sis!

Happy Birthday, sister! I’ll keep the emergency response team support number on my dial just in case you faint while blowing the candles.

Happy Birthday, sister! Thank you for putting up with my crazy ideas, even though sometimes they turn out great!

Happy birthday sister and thanks for the crates of wine. We’re all going to die from hangovers someday, but I hope it’s not today.

funny happy birthday wishes for younger sister

Happy Birthday, sis! You are at an age of understanding the horror of waking yourself with your own fart.

The best wishes for your special day are in a glass of sparkling wine. Happy Birthday!

Getting me to send you a birthday wish on your birthday is actually your biggest achievement this year! Happy Birthday, sister!

When you were born, my parents said “You’re not a baby anymore!” And I’m here to tell you… They were right. Happy Birthday, sister!

It’s your birthday today! You’re almost as old as me! You just have a few more years left before we’re the same age!

Happy Birthday, sweetheart! Birthdays are just like dog food: they come in small packages.

Happy Birthday, sis! Birthdays and cheese have a thing in common! They stink more when they get older.

Happy birthday, sister! There’s actually one birthday in human life, the rest are just anniversaries of the first.

Happy Birthday, sis! A sister is like a best friend who you get to talk about everything with, but never have to share your stuff with.

The best thing about having a sister is that she can be your best friend and your worst enemy all at once. Happy birthday!

Read: Funny Birthday Wishes for Cousin Sister

Funny Birthday Wishes for Younger Sister-in-Law

Happy Birthday, sis-in-law! Your smile will be bright without teeth just like your face is without brains.

Some people in the world are beautiful; others are wise and most are both! But you are neither! Happy Birthday!

You’re the best friend anyone could ever ask for. You’re always there when I need a glass of wine, and I’m so grateful for that. Happy birthday!

I know that getting older doesn’t mean growing up has to stop. In fact, it’s just the opposite. Happy birthday!

funny birthday wishes for younger sister in law

I’m a little bit older than you, but I’m also a whole lot wiser. Happy birthday to my beautiful sister-in-law!

Do you know why your name is on the list of my best friends? Because you are old, damn and you won’t even know it. Happy Birthday!

Happy Birthday sis in law! Growing up, you were a fearless lioness, grown-up; you have turned into a lazy cat.

What amuses me the most is seeing how hard it is for you to hide old age even with this heavy makeup. Happy birthday, sister-in-law!

Happy Birthday! A year has just passed and you look like you are on a mission to be on the Guinness Book of Records for the fattest girl in the world.   

Funny Birthday Wishes for Younger Sister from Elder Sister

Happy Birthday to my crazy sister! The increasing age spots on your face make me so relieved.

Happy Birthday, sister! I wanted to bring you a gift for each year you have lived and surprisingly there’s not enough space.

Happy birthday! Everyone will be old someday. But you should’ve been young for at least one more day.

funny birthday wishes for younger sister from elder sister

Happy Birthday, sis! Everybody’s probably wondering how old you really are. Well, let me tell you… you’re older than dirt.

I hope you don’t mind if I go ahead and wish you a happy birthday. It’s not that I’m trying to be a party pooper or anything. Happy Birthday sweet sis!

Happy Birthday! I wish I could be with you on this special day, but instead, I have to take a nap at the office because of my crazy boss.

Happy Birthday! Your sister loves you no matter what age you are or how old your face looks in the mirror!

I wanted to personally buy a big and delicious cake for you on your birthday, just not sure if the doctor allows you so much sugar at your age. Happy Birthday!

A sister is like a dog: they bark at everyone but they don’t bite. Happy Birthday, sister!

Read: Sweet Birthday Wishes for Sister

I hope after reading this article you have found some of the best funny birthday wishes for younger sister that you can send to her.


  • Mohmand

    Mohmand holds a Bachelor of Science (B.Sc) Honours Degree from Aston University (UK) and he holds a Masters Degree from The University of Leicester. Mohmand lives in the United Kingdom and loves to write about topics of his interest.

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