Cock Grenade Share definition Flag A Cock or Penis that is so massive it destroys every vagina in which it comes in contact with. Andrew your dad's Cock Grenade blow-up your mom's vag so bad she had to have surgery. Cock Grenade by Leroy McLavine February 28, 2011 0 0 Get merch Get the Cock Grenade mug. Buy Now — $32.95 See more merch