I know you better than most seeing how I watched you grow up, so my birthday gift to you this year is that I’ll continue to keep all the things I know about you to myself and not reveal any of your secrets!
On your birthday this year, little brother, I propose we make a pact. I won’t reveal your age, so long as you don’t tell anyone that I’m even older than you!
Happy birthday, little brother! If there’s one thing you should’ve discovered from having an elder sibling like me is that we only get more awesome each year!
Like lots of little brothers you were naughty, mischievous, cheeky, and sometimes annoying growing up, and I’m so glad to see that nothing has changed since then!
I’m wishing a very happy birthday to you today, bro!
I’ve spent so many years laughing at you and I’m sure that I’ll spend many more laughing with you! I’m so lucky to have a funny younger brother like you!