Girls are testing male ability to get hard: all three are naked - test subject, the nurse and sexy doctor
Naughty doctor goes on top of patient face and making him smell her pussy while another girl is studying his penis
Nurses are taking strapon cocks out of nowhere and shove them into man ass and mouth while he is on all fours
Medical tools are not enough to get cum samples: sexy feet in high heel shoes are to used for trampling
Weird medical tests require man to wear bizarre electrified device around his manhood and lick pussy on command