If you think about it normally, a formerly bullied creepy guy invites the former delinquent girl who used to bully him to his home for revenge... that's just too evil and low. Even though they've become married women, working at an outcall massage parlor, those former delinquents are also questionable (laughs). Each having grown up, the man's dick has enlarged and the woman is sexually frustrated... once it comes to this, their positions reverse, and the subsequent developments are easy to imagine.
