Cock Stuffer Share definition Flag Cock Stuffing is the act of inserting an erect penis into the urethra of another man, in order to recieve sexual gratification. Fuck, Jared St-Clair is such a fucking cock stuffer. Cock Stuffer by BilZ0r February 23, 2004 0 0 Get merch Get the Cock Stuffer mug. Buy Now — $32.95 See more merch