Stuck on what to say? Here’s what to write in a birthday card for a friend, coworker or that special someone in your life.

These funny, heartfelt, and sentimental birthday wishes go perfectly in a card (especially when paired with a gift for your sister), in an Instagram caption, or even in an early birthday morning text.

sister, friend or coworker — that you're thinking of them. Baking their favorite cake and picking out the perfect birthday card are good places to start. For those who need a little inspiration ...