Try to imagine the scene: an awkward, gangly nerd-boy just standing there in public, frozen, with his pants in a bunch around his knees. His clinging briefs are only a bit whiter than his pasty legs, and don't leave much to the imagination. Two bratty young women eye his bulge -- or rather his pathetic LACK of a bulge -- their squeals and shrieks drawing the attention of anyone within earshot.
Yeah, that was YOU.
"Aw, nice little tighty-whities, loser," taunted Trixie. "Did your mommy buy those for you?"
Dixie chimed in: "She probably has a hard time finding them small enough."
"Were your cartoon Underoos in the wash today?"
"You know, he'd look good in panties; preteen-sized panties would be, like, the ideal fit for THAT package."