You might be growing up in age, but we’re yet to see you grow up in maturity! You still have plenty of time for that though, little sis! Happy birthday!
We used to fight, squabble, and argue, we would laugh together and make fun of each other. Actually, come to think about it, not a lot has changed really, little sis!
As your elder sibling, it’s my duty to boss you around and act as though you’re always bothering me but seeing as today is your special day I’ll give you a break!