Cock Tank Share definition Flag A group of males, usually 4 or more packed tightly into a vehicle. Typically are desperately hunting for a piece of ass riding the strip. "Did you see those 8 guys packed into that jeep?" "Yeah...what a cock tank." Cock Tank by BJStudd December 20, 2008 0 0 Get merch Get the Cock Tank mug. Buy Now — $32.95 See more merch