Flushbuster Share definition Flag A turd so large and hard that it resists repeated efforts to flush it down. "Mom, the toilet is plugged up again; Grandpa must have had another none of his flushbusters. Flushbuster by riverguy March 6, 2010 0 0 Get merch Get the Flushbuster mug. Buy Now — $32.95 See more merch
