3 flush Share definition Flag A large dump that requires 3 flushes to send down. One flush worse than the 2 banger. Often used in the situation of diarrhea. "What took so long?" "Had the runs, it was 3 flush" 3 flush by B.I.G Nougat January 27, 2008 0 0 Get merch Get the 3 flush mug. Buy Now — $32.95 See more merch
