the doctor now knows how to wank with piss and cum with only piss wow.this is wot the doc dose. first a bladder full of piss, a cock strap with shaft ring.wen u want 2 just start playing with the head and stroke the shaft, now with a semi hard on let just a little piss flow ,with nipple play and the odd sniff of poppers u can piss cum ,keep at it lads u will get there in the end ,