Happy birthday, thank you for being my unpaid therapist. Our friendship is my favorite sitcom. Happy birthday to my co-star! No one will ever be as entertained with us as us–and I like it that way.

The Hill sisters’ lives “Happy Birthday” may be the Hill sisters’ main claim to fame, but their impact on American history extends far beyond the beloved song.

It can be hard to put your feelings for your best friend into words, so here are the best ways to wish your friend a happy birthday, on Instagram and beyond.