boneturd Share definition Flag When a male hollows out a piece of feces and inserts his penis into said hollowed feces. He then proceeds to have intercourse with a female. Tom gave Meredith a boneturd. He said it stunk for weeks after. boneturd by dyllicious January 27, 2011 0 0 Get merch Get the boneturd mug. Buy Now — $32.95 See more merch