Summoning busty girls for a nasty bit of fun

This horny doctor and his busty assistant awaken a couple of nasty-looking twin whores. As soon as they come around, the doctor puts them to the test by having a couple of his test subjects pound the living crap out of them. In fact, the action is so ferocious that even the cock-hungry assistant joins the party and gets nasty. The girls perform really well and the doctor is very pleased with the way they suck and ride cocks. And he is especially thrilled with the way their tits bounce and asses bob. In the name of science, job well done.