Fear Factor

Donkey semen won't be served for now.

NBC has pulled Monday's episode of Fear Factor in which teams of twins have to drink two glasses of donkey semen to advance to the next round. A repeat will air in its place.

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The network had no comment on the last-minute change, but, according to TMZ, Comcast, NBC's parent company, had reservations about airing the episode after the gossip site reported details of the task on Friday.

Fear Factor host Joe Rogan teased the challenge to Entertainment Weekly last month and was unsure himself if the episode would see the light of day. "It's so over the top and ridiculous," he said. "When they told me, I really thought they were joking at first. I don't know where the debate is, but NBC is not sure if they're going to air it."