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

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

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

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

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

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

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

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

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

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

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

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 do your own laundry.

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

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

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

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 laughter, love, and all the things you pretend to like when I'm around!

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