When did South Park Season 13 Episode 4 air?
South Park Season 13 Episode 4 aired on April 1, 2009.


Someone played an April Fools joke on the boys and it didn't go over well. Butters is incapacitated, Cartman is furious and the rest of the boys are afraid someone might do it again.
Direct answers for episode-level questions and details.
South Park Season 13 Episode 4 aired on April 1, 2009.
This episode runs for approximately 23 minutes.
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