I actually almost got caught by the teachers a few times but I just whipped out a book and used that as an excuse for the giggling and my hands being beneath the desk.
And don't even get me started on the other stuff I pulled (while I was too young to be charged... Also no pun intended.). Public nudity, groping, attempting to look up skirts. Hell, I even teased people (okay, that might have been a slightly gay thing to do) just for the fun of it. It's a wonder I wasn't raped. I mean, nobody wants to rape guys for the most part anyway but I'm sure there must've been at least a few pedos who saw my antics at some point.