Two student nurses are studying for an exam and are struggling with some of the details of the male anatomy. When a doctor walks in they are desperate to uncover the differences between a circumcised cock and an uncircumcised one so they yank his trousers down and start studying his cock! They get him onto the bed and jerk him off while kissing him. Then they take turns to suck his dick and when they double team him, the two mouths on his penis at the same time send him over the edge to a big orgasm!