felonious grump Share definition Flag a poop taken with no follow-up flush, ventilation consideration and/or consideration for the next party. I noticed a felonious grump while I was walking into the bathroom and had to bust out real quick. felonious grump by doctor8 January 31, 2008 0 0 Get merch Get the felonious grump mug. Buy Now — $32.95 See more merch
