Being allowed to stroke? Sure. Being allowed to stroke without pain or humiliation? C'mon now, you should know better than to expect that from Molly and Andriana. They will let this slave stroke but there is no way that will happen without some form of amusement for the girls, in this case being shocks to his cock. They make it even more difficult by randomly hitting his hand away with their feet, then letting him start stroking again. Poor guy, all he wants is an orgasm but that is only of secondary importance to the girls, with primary importance being their entertainment.