When being constrained, all things want to struggle for freedom. Man's testis is no exception~ The rubber ring binds my scrotum to press for rapid production of sperms. That makes me much horny, and the physiology of maleness is too impatient to wait to spray & exhaust energy of life. I like to be a semen cattle with no regret and don't stop milking myself until the testes are overspend! ???????,????,??????????!