The mistress says she’s going to examine the masochist’s anus and cuts a hole in his underwear, exposing it completely. The mistress puts on rubber gloves and inserts one finger after another into the man’s anus, thrusting in and out hard, laughing. Finally, the mistress inserts four fingers into the man’s anus and stirs them around inside. Then the mistress presses her fist against the man’s anus instead of her fingers, and the man’s anus swallows it completely. The mistress thrusts her fist in and out hard, fucking the man’s anus and grinning. Next, the mistress inserts an extra-large dildo into the man’s anus to expand it. The mistress attaches the dildo to a strapon to make a dick and inserts it into the man’s anus. The mistress moves her hips hard, fucking the man’s anus repeatedly. The man, fucked by the mistress, gives in and becomes submissive, and the mistress makes him hers. Then the mistress trains the man’s anus until it can accommodate a double fist.