nasters Share definition Flag a word that one says when something is vulger, disgusting, or just downright gross. Person 1: I just heard bout this guy that eats his buggers all the time. Person 2: Oh, that's nasters! nasters by Mcgee and Me December 18, 2008 0 0 Get merch Get the nasters mug. Buy Now — $32.95 See more merch