What to write in a funny adult birthday card
Add one line only you could write.
For a close friend
Start with a shared memory and end with a birthday wish. Try “Here’s to another year of ordering dessert first. Happy birthday, and dinner’s on me next week.” A real detail makes the message feel personal even if the cover delivers the joke.
For a partner
Pair a specific compliment with an invitation you know they would enjoy. Try “You still make a Wednesday feel like a date. Pick the movie and I’ll bring the snacks.” Leave enough room to sign and put the card in an envelope if the note is personal.
For a group signature
Have each person add a few words, or take turns writing on a separate insert. Leave the recipient’s name and the main birthday wish easy to find. A separate sheet also works when the card already has printed text inside.