massivedungatitis Share definition Flag This is when your ass explodes with a massive load of shitty diarrhea every five minutes! Nicky could not get off the toilet because of her massivedungatitis. massivedungatitis by Heather and Dana January 6, 2008 0 0 Get merch Get the massivedungatitis mug. Buy Now — $32.95 See more merch