What to Write in a 40th Birthday Card: Funny and Heartfelt Ideas
Funny, heartfelt and slightly cheeky ideas for what to write in a 40th birthday card for a friend, partner, sister or colleague.
Card Ideas & Wording — birthday
Rude Birthday Card Messages: What to Write for Her, Him and Your Best Mate
Cheeky, sweary and downright rude birthday card messages for friends, partners and siblings who'd hate anything soppy.
Funny Birthday Card Ideas for Your Best Friend (That'll Actually Make Them Laugh)
Finding a birthday card for your best friend should be easy, but somehow you always end up standing in a shop aisle for 20 minutes, holding something beige that says "Wishing you a wonderful day." Your best friend deserves better.
Here's a guide to picking a card that actually lands, plus ideas for what to write inside.
Why funny cards work best for friends
A heartfelt card is lovely, but with your closest friends, humour is often the love language. A card that makes them snort-laugh will sit on their mantelpiece far longer than a generic "Happy Birthday" one. The trick is matching the joke to the person: their sense of humour, your shared history, and how long you've been friends.
What to write in a funny birthday card for your friend
Stuck on the words? Here are some ideas to get you started:
- "Another year older, another year of me having to pretend I'm younger than you. Happy birthday."
- "I got you a card instead of a present. You're welcome."
- "Happy birthday! You don't look a day over [insert age they hate]."
- "Congratulations on surviving another year of my friendship."
- For a milestone birthday: "30 looks good on you. Mostly because it looks terrible on me."
Tips for choosing the right card
- Know your audience. Dry wit, slapstick, or self-deprecating? Pick a card that matches their humour, not just yours.
- Go specific over generic. A card that references something only the two of you would understand is always funnier than a mass-market joke.
- Don't overthink the message. Sometimes "I love you, you absolute nightmare" is the most heartfelt thing you can write.
Want something cheekier? Read our rude birthday card messages.
Browse our Birthday Cards, including our Rude Birthday Cards for friends who can take a joke.