There was the thing called the Cambria list... but it seems a bit much
http://www.pbs.org/wgbh/pages/frontl...g/cambria.html
The Cambria List:
Box-Cover Guidelines/Movie Production Guidelines
Before selecting a chrome please check facial expression. Do not use any shots that depict any unhappiness or pain.
Do not include any of the following:
No shots with appearance of pain or degradation
No facials (bodyshots are OK if shot is not nasty)
No bukakke
No spitting or saliva mouth to mouth
No food used as sex object
No peeing unless in a natural setting, e.g., field, roadside
No coffins
No blindfolds
No wax dripping
No two dicks in/near one mouth
No shot of stretching pussy
No fisting
No squirting
No bondage-type toys or gear unless very light
No girls sharing same dildo (in mouth or pussy)
Toys are OK if shot is not nasty
No hands from 2 different people fingering same girl
No male/male penetration
No transsexuals
No bi-sex
No degrading dialogue, e.g., "Suck this cock, bitch" while slapping her face with a penis
No menstruation topics
No incest topics
No forced sex, rape themes, etc.
No black men-white women themes