Pre Shit Ass Gas Share definition Flag extremely stinky flatulence prior to dropping a deuceGas before a person defecates dude i will see you later, your standing down wind in my pre shit ass gas. gotta go drop the deuces Pre Shit Ass Gas by paintblusher pantie dropper April 11, 2011 0 0 Get merch Get the Pre Shit Ass Gas mug. Buy Now — $32.95 See more merch