an internet version of a dog pile when members of a forum join forces to flame another member who constantly posts drivel, brag posts and troll posts.
Tugboat gets all pissed off and threatens to lock or delete threads once we begin to cat pile him.
Men walk their dogs. Pussy fags who can't get laid walk their cats. Thus, men dog pile, and in this case, the pussy fag who walks his cat on a leash, gets cat piled.