50 Shots of Grey
Pick as many rules as you are comfortable with. All of the rules should only be played by someone with an iron liver. This game is also intended to be played with a "drink" being defined as taking a drink, not doing a shot. They're listed in order of approximated difficulty (easy to hard).
Drink every time
There is a scene not about Grey - I expect to use this rule maybe twice after the first few chapters.
Grey further proves that he is, in fact, a Warlock.
There is strangely clean language EX: Ana talks about Grey wailing away on her "behind"
Inappropriate lady-boners. EX: Ana and Grey are discussing how he was molested as a kid and she gets a lady boner because of his dark, sad eyes.
Ana's Inner Goddess or Subconscious come out to play. Though this one is superfluous, I mean, you were already doing that, right?
Consent is ignored.
Ana goes into waaay too much detail about something.
Kate is inconsistent. So basically any time Kate is on page.
Grey and Ana e-mail each other (once per exchange, not one per email otherwise you'd die).