Funny Birthday Wishes for Sister

Make your sister laugh on her birthday with these hilarious and heartwarming birthday wishes! Copy and download them today for a quick and easy way to show your sister how much you care.

Happy birthday! Remember, you're not getting older; you're just leveling up!

Happy birthday! Remember, you're not getting older; you're just leveling up!

Happy birthday! May your day be filled with laughter, love, and all the things you pretend to like when I'm around!

Happy birthday! May your day be filled with laughter, love, and all the things you pretend to like when I'm around!

Happy birthday! May your day be filled with as much joy as the joy I feel when you're not around!

Happy birthday! May your day be filled with as much joy as the joy I feel when you're not around!

Happy birthday to the one who has the perfect blend of sweetness, craziness, and everything in between!

Happy birthday to the one who has the perfect blend of sweetness, craziness, and everything in between!

Happy birthday to the one who makes family gatherings bearable – or at least more entertaining!

Happy birthday to the one who makes family gatherings bearable – or at least more entertaining!

Happy birthday! Here's to another year of pretending to be normal when we're together!

Happy birthday! Here's to another year of pretending to be normal when we're together!

Wishing you a happy birthday and a year of finally learning how to do your own laundry.

Wishing you a happy birthday and a year of finally learning how to do your own laundry.

Wishing you a happy birthday and a year of finally learning how to adult.

Wishing you a happy birthday and a year of finally learning how to adult.

Happy birthday to the one who knows all my quirks and still chooses to be seen with me in public!

Happy birthday to the one who knows all my quirks and still chooses to be seen with me in public!

Age is just a state of mind, but in your case, it's a really, really confused state of mind. Happy birthday!

Age is just a state of mind, but in your case, it's a really, really confused state of mind. Happy birthday!

Another year older, wiser, and still as charming as ever! Happy birthday, sis!

Another year older, wiser, and still as charming as ever! Happy birthday, sis!

Wishing you a happy birthday and a year of finally learning how to keep a plant alive.

Wishing you a happy birthday and a year of finally learning how to keep a plant alive.

Congratulations on reaching an age where your back goes out more than you do. Happy birthday, old-timer!

Congratulations on reaching an age where your back goes out more than you do. Happy birthday, old-timer!

Wishing you a birthday full of joy and laughter, just like your attempt at cooking last week. Bon appétit!

Wishing you a birthday full of joy and laughter, just like your attempt at cooking last week. Bon appétit!

Happy birthday to the one who knows all my flaws and loves me anyway – or at least pretends to!

Happy birthday to the one who knows all my flaws and loves me anyway – or at least pretends to!

Here's to another year of your amazing existence, sis! I hope your birthday is as exciting as watching paint dry.

Here's to another year of your amazing existence, sis! I hope your birthday is as exciting as watching paint dry.

Happy birthday! May your day be as bright and beautiful as the smile you wear when you see cake!

Happy birthday! May your day be as bright and beautiful as the smile you wear when you see cake!

Happy birthday, sis! May your cake be as sweet as your singing voice...which is to say, not sweet at all.

Happy birthday, sis! May your cake be as sweet as your singing voice...which is to say, not sweet at all.

Happy birthday to the one who made my childhood unforgettable and my adult life a little more bearable!

Happy birthday to the one who made my childhood unforgettable and my adult life a little more bearable!

Happy birthday to the one who always knows how to push my buttons and drive me crazy. May your day be as irritatingly delightful as you are!

Happy birthday to the one who always knows how to push my buttons and drive me crazy. May your day be as irritatingly delightful as you are!

Age is merely the number of years the world has been enjoying you. Keep spreading the joy, sis!

Age is merely the number of years the world has been enjoying you. Keep spreading the joy, sis!

Happy birthday to the sister who never fails to remind me that I'm the less talented and less attractive sibling. You truly are a gift.

Happy birthday to the sister who never fails to remind me that I'm the less talented and less attractive sibling. You truly are a gift.