21. Happy Birthday to a brother who is smart, funny, witty, charming... and reminds me a lot of myself!
22. Happy birthday to a crazy brother!
23. I guess your birthday wish came true because you have me as your sibling!
24. You are getting older now big brother but you still act like a child. Happy birthday to you.
25. I hope you have a spectacular birthday bro, you deserve it!
26. [Your pet’s name] wanted me to tell you “Happy birthday to my favorite uncle!”
27. Happy Birthday bro! Congratulations on another trip around the sun!
28. Happy birthday brother. You might be the younger one but at least I’m the better looking one!
29. No matter how serious life gets, you've got to have that one person you can be completely stupid with. So glad I've got you bro! Have a brilliant birthday.
30. If you’re feeling old, don’t worry: you’ll always be an annoying little kid to me.
31. Happy Birthday brother! They say that the older you get, the smarter you become. But as we keep on doing the same stupid things we did as kids, I guess we are the exception to that rule.
32. Happy birthday to someone who’s charming, smart, and perfect in every way. Takes one to know one!
33. Happy Birthday to the best brother in the world! Have a fantastic day!
34. Happy Birthday! I hope you have a great day today and the year ahead is full of many blessings.
35. Brother, I have always looked up to you, but then I have to, you’re so much older than me! Happy birthday.
36. No one gets me like you do, because no one else grew up in our batsh*t crazy fam.
37. Brother, how old are you today? I need to see a doctor, you’ve just made me realise how old I am! Happy birthday.
38. Happy birthday to my kid brother. Hopefully by now you’ve outgrown your aversion to vegetables.
39. Happy Birthday to my brother. Here's to another year of laughing at our own jokes and keeping each other sane!
40. You may not have gotten the brains in the family, but you also didn’t get the looks. Anyway, happy birthday!