I'm BARELY out of High School and already it's reunion time

Or at least that's how it feels. I can't have been out of school for 10 years already, can I? Good Lord - what have I done with the last 10 years? I feel like if I look hard enough I'll be able to find the missing years. It makes no sense to me, but I almost feel like I should check under the cushions on the couch. I think it must be a kind of panic setting in that makes me want to analyze this stuff.