underpants gnomes
A general term for short-ass freshmen (occasionally uperclassmen) who have yet to hit puberty and appear to be in the fourth grade (both in physical appearance, psychological development and writing ability). Usually have some strange/repulsive/childish personal habits (Ex: playing one-man football). Non-anime boobies are like kryptonite to them. Often carry airport bags in lieu of backpacks, believed to be full of stolen underpants (this cannot be confirmed due to their kung-fu grip ability), suspected to be a part of the shadowy and sinister "Phase 2". Reviled by all but the most desperate or demented fanboys and otaku. Sometimes abbreviated to UPGs.
"you wanna hang out in Steve's room?" "nah, the Underpants Gnomes are in there watching Pokemon again."
By Natepalm