When a man starts burrowing into an asshole first with his hands like a dog then sticks his face in it making the sounds "Om nom nom nom" like a rabid animal. After he makes a big opening, he sticks a rather large object like a bone, or animal, into the anus opening that eventually hangs out when the other person walks away leaving a saggy bottom and crooked walk.
Look at that dude limping. Naw man, see how his pants are hanging a little low, too? He MUST'VE gotten the grotts earlier.