Pillow-biter

[Justin Bieber]

An exceptionally vigorous butt-pounding between men in the dorsal-ventral position, generally noteworthy for its combination of depth, force and velocity, such that the poundee is transported to an otherworldly, orally-fixated state of extreme hurt-so-good pleasure as to unconsciously bite down on a pillow, duvet, forearm, Jack Russel terrier, or anything else that happens to come with close proximity of his mouth.