snip bone Share definition Flag a small prehensile bone just inside the anus. its primary function is to put a taper on the end of the shit, so the anus doesn't slam shut after the shit passes my snip bone stopped working and man it hurt when my arse slammed shut. snip bone by sheerted November 27, 2007 0 0 Get merch Get the snip bone mug. Buy Now — $32.95 See more merch