Skweeche Share definition Flag A spontaneous release of air from the rectum caused by a relaxation of the sphincter muscle, during analingous. Dude, you totally skweeched while i was inside you. that's not proper anal etiquette. Skweeche by Johnny Hammerstix September 7, 2009 0 0 Get merch Get the Skweeche mug. Buy Now — $32.95 See more merch