When people ask me if I have a brother, I tell them I have someone more than that. What I have is a friend from the same parents. Happy birthday, little bro!
I know I’m your favourite. I know that you admire me and feel like you're second best. But guess what, kid! You are my favourite and I admire you just as much.
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!