cumbuttitch Share definition Flag where a guy cums in someone's butt, so they get a rash and it itches really bad! Guy 1: Dude you gave me cummbuttitch Guy 2: I told you we shoulda just given each other head! cumbuttitch by GooLz June 19, 2005 0 0 Get merch Get the cumbuttitch mug. Buy Now — $32.95 See more merch