As reported by TMZ, tonight's episode of Fear Factor was to have featured a stunt where contestants drank a "full glass of donkey semen — with a glass of urine thrown in for good measure. Contestants had to drain both glasses in order to move on to the next round."
The episode has been pulled by NBC, presumably because of protests from donkeys who were sickened at the idea of being seen on the show Fear Factor.
At the very least, NBC can say no donkeys were harmed in the filming of the episode. The donkeys were exhausted but satisfied.