Dr. Mia Malkova has heard all about Dr. Johnny Sins and his sex research, and she doesn't approve one bit. She's threatened to remove his funding, and that leaves Johnny Sins with only one option to save his life's work: call in sex expert Bonnie Rotten to help expose Dr. Malkova's inner super slut! It starts off with a spanking, and then Bonnie Rotten and Mia Malkova eat each other's pussies until Mia Malkova is horny and dripping wet. They share Johnny Sins's dick, giving him an amazing double blowjob and taking turns riding his dick. Bonnie Rotten squirts as she cums hard, and Mia Malkova eats her pussy like it's her dinner. Finally, the two sexy sluts get to share a big facial cumshot!