My birthday is next week. I'm gonna be 38, which is way too old to be as immature as I am. It seems like just yesterday 30 was the default 'old' age. Not ancient or anything, just more "Hey, what's that dude doing hanging out over by the keg?" "I dunno, he's like 30 or something." "Yeah, well he's freaking out all the girls, somebody needs to tell him to get home to his History Channel."
Guess I'll have to revise that figure up to 40.