Darwinian Dump Share definition Flag A bowel movement of such length that it is climbing out of the toilet water. I had a darwinian dump this morning, that thing was climbing up the side of the toilet bowl. Darwinian Dump by PhillybertoB September 9, 2013 0 0 Get merch Get the Darwinian Dump mug. Buy Now — $32.95 See more merch