Girls are testing male ability to get hard: all three are naked - test subject, the nurse and sexy doctor
Naughty nurse is wearing bikini under the robe - using her hands and feet to tease male but not allowing him to cum
Getting cum samples is sometimes requires nurses to naked and masturbate cock in rubber gloves
Classy bitch is taking notes describing the process of attaching big weights to test subject's penis and balls
Big and strong stud turns out to be submissive: going on all fours so girls could do anal probing
Weird medical tests require man to wear bizarre electrified device around his manhood and lick pussy on command
