Chaotic Underloins Share definition Flag When someone of the opposite sex makes your pants go crazy. Dude, when Allison touches me, it causes chaos in my underloins! You know, like the movie, Chaotic underloins. Chaotic Underloins by BubblyVagina June 26, 2014 0 0 Get merch Get the Chaotic Underloins mug. Buy Now — $32.95 See more merch