Cock exposed on my cockboard cumming twice

His cock and balls are exposed on my CBT bench. I tied a rope around his balls so I can pull the balls while playing with his cock. He is so excited that it doesn't took long and he is about to cum so I have to ruin his orgasm by stopping all activities except pulling his balls hard with ther ope, he shoot an enormous amount of sperm with extra strong blasts. I continue playing with his cock and make him cum again in just a couple of strokes.This was beautiful cum shooting.