I've got an idea for a film. I think a good name would be 'Prior Consent'.

At the start of the scene the whore is sat down and listens to a graphic description of what's going to be inflicted on her. She's then asked if she agrees and how she feels about it. For example:

Dude: "You're going to have a dick forced down your throat so far that it triggers your gag reflex and causes you to bring up saliva or vomit which will be rubbed over your face. The dick will then be shoved into your ass while your head is stood on. You will then be made to suck the dick so that you taste your own shit. This is all done to degrade you so that men can jerk off. Do you agree?"

Whore: "Yes, I give my prior consent to be degraded."

Dude: "How do you feel about it?"

Whore: ...