I gripped his cock, finally, and I felt it jerk and go rigid. I didn't laugh; I was breathing too hard, humping against his thigh while I fondled his cock and balls and rained my hand down on his ass, fast, slow, soft, hard, while he just moaned and panted under me.
The imagery in that one paragraph alone is enough to reduce me to a whimpering puddle. Hot and v.v. believable!