A swimming school for moms led by former sports trainer Yumi Kazama. The male trainers quit one after another due to the wild wives, and frustration is only growing. At that time, the husband of a couple who came to visit the school was a former American football player. The moms, excited to see his body and crotch, try every trick in the book to seduce him! They ride him in the cowgirl position, shaking their big breasts and slamming their meaty asses into him, making him writhe in agony over and over again! It doesn't end with just one time, and the man's balls are completely drained by the forced cowgirl insertion over and over again.