Muscular egotist Michael Flex likes his bare back anal at the hands of his own personal trainer

A young muscle builder Michael Flex decides to get some muscle tone that would best be offered by a personal trainer. The workout session is nothing close to what the two were expecting and it turns erotic with extreme bareback anal sex. This is an awesome story, whose main character, Flex, is characterized by a materialistic desire for hedonistic perverted sex education.