Gia Derza and
Daya Dare are clinical researchers at B.R.I (Brazzers Research Institute), and they've got a model test subject today: Johnny Love! He's got a huge cock, he's responded to their ad, and he's ready to fuck! These girls aren't exactly robots, but they stay focused on fuckery and indifferent to Johnny Love, raunchily researching and overwhelming him with their perviness. The tests start simple (measuring the girth, length, and taste of his cock) but ...