Satirical animated TV show "South Park" beeped out the words Prophet Muhammad and plastered its Wednesday episode with the word "CENSORED" after being issued a grim warning by a U.S. Muslim group. The irreverent comedy show on Comedy Central also substituted a controversial image seen last week of the Prophet Muhammad in a bear outfit with one of Santa Claus in the same costume. It was not immediately clear if the move was a bid to tread carefully following the warning against the "South Park" creators, or if they were poking fun at the fuss.