atimmsophobia

fear of growing up, symptoms include rooting for your former high school while your college buddies stare in disbelief and confusion.

Friend: What the fuck are we watching?
Timms: The St. I's football game of course?
Friend: I think you need help, I believe you are suffering from atimmsophobia.
Timms: *sees St. I's score a touchdown and immediately jumps up and breaks into alma mater*