21st Birthday Messages for a Friend: Funny & Sincere

From hilarious inside jokes to heartfelt wishes, find the perfect message to celebrate your friend's big 2-1.

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Your friend is turning 21, and that calls for a message that's as awesome as they are! Whether you want to make them laugh, get a bit sentimental, or just get the party started, here are some ideas for your mate's card.

Messages for a Friend Turning 21

Funny & Celebratory

"Happy 21st! We've been planning for this for years. Let's make it a night we'll never forget (or one we'll struggle to remember). So glad to celebrate with you!"

"21 and officially a proper grown-up... or at least that's what we'll tell people. Happy Birthday to my partner in crime!"

"Happy 21st Birthday to the one who still acts 12. Never change! Can't wait to celebrate with you."

Sincere & Heartfelt

"Happy 21st to my incredible friend. Through all the ups and downs, you've been a constant. I'm so lucky to have you in my life and can't wait to see what amazing things you do in your twenties. Cheers to you!"

"21 years of you making the world a better place. So proud of the person you are and so grateful for our friendship. Happy Birthday!"

"We've made so many amazing memories, and I can't wait to make more as you start this new chapter. Happy 21st Birthday, bestie!"