Routine chastity ball draining from behind with 4 ruined orgasms into a glass

Description: My sub is on all fours on the bondage table with his ankles restrained to each side and its time to empty his balls for the first time in 2 weeks but first i need to unlock his cock and get it out its cage. then i sit behind him looking through his legs and milk his cock from behind ensuring that i don't go too far and let him enjoy an orgasm, once i get him close to blowing his first ruined load i let go and direct his cock so the man muck goes into a glass, after the first a further 3 ruined orgasms follow and then after the last ruin his cock is super sensitive so i treat his cock to a bit of post orgasm stroking and tickling.and then proceed to put his cock inside a glass full of ice cubes to shrink his rock hard cock back down to a more suitable size to get back in his cage.