Everything she does -- from her fist clenching in his hair, to her nails raking down his back, to her squeezing his ass -- spurs him on to thrust faster, harder, deeper, with an almost caveman-like intensity that's echoed in his animalistic grunts and pants and growled obscenities.

Whispering those porno sweet nothings does well to stroke his ego, too. He's too busy banging her to be modest.