Today is your special day so I won’t make it all about me, but as you turn another year older I can’t help but be reminded of the fact that I’m even older than that! Thanks a lot!
We may have argued at times growing up, sis, but I wouldn’t have changed a thing about our childhood! I’m wishing you the happiest birthday possible today!
You were such a bratty little sister, always trying to take my things and tag along everywhere I went. Things had to be done your way or you would throw a tantrum.
Despite this, I want you to know that I love you to bits.
I was going to make a joke about how you’re getting older, but that immediately backfires as I’m always going to be older than you! At least we can make fun of each other as we grow old together!