Elegant lady-doctor is checking up if the test subject still can have his penis hard enough to fuck a woman
Naked nurses are stroking his cock but then denying orgasm and fucking his ass with strap-on instead
CFNM scene where male is following nurse commands: stripping down, showing some physical activity and providing his penis for tests
A little bit of brutal handjob and facesitting are used by cruel nurses when in need to get cum smaples