The act of taking a man's cock in your hand, moving it slowly up and down while he gets hard, then stroking faster and harder until he cums. For more pleasure (and cool hot sound) use lots of lubrication.
I knelt down by Jeff, took his cock in my hand, rubbing it up and down then put some KY on it to make it slippery. My hand sliding up and down made him so horny he could hardly help but cum like crazy. I watched his cum squirt all over his stomach and my hand.