vomitrocity Share definition Flag an alcoholic social event in which a large number of the participants who attend end up so inebriated that they become sick. Scott stayed home on St. Patty's Day to avoid the inevitable vomitrocity. vomitrocity by simply scott March 17, 2009 0 0 Get merch Get the vomitrocity mug. Buy Now — $32.95 See more merch