plopwash Share definition Flag The water that splashes back when you drop chocolate or take a shit,providing a little rinse for your butt-hole. Damn,that water cold! That plopwash done froze my booty hole. plopwash by Lowlifebastard February 6, 2009 0 0 Get merch Get the plopwash mug. Buy Now — $32.95 See more merch