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 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 and Mia eat each other's pussies until Mia is horny and dripping wet. They share Johnny's dick, giving him an amazing double blowjob and taking turns riding his dick. Bonnie squirts as she cums hard, and Mia eats her pussy like it's her dinner. Finally, the two sexy sluts get to share a big facial cumshot!