pumping the derrick Share definition Flag When you are pinching a loaf and stand up and sit back down to squeeze the last bit of poo from your bowels. Pumping the derrick: I was pumping the derick during my morning poo. pumping the derrick by King kupa April 11, 2015 0 0 Get merch Get the pumping the derrick mug. Buy Now — $32.95 See more merch
