High Quality Content by WIKIPEDIA articles! "Weight Gain 4000" is the second episode of the first season of the animated television series South Park. It first aired on Comedy Central in the United States on August 20, 1997. In the episode, the residents of South Park excitedly prepare for a visit by celebrity Kathie Lee Gifford, whom the boys` third-grade teacher Mr. Garrison plans to assassinate because of a childhood grudge. In the meantime, Cartman becomes extremely obese after buying a bodybuilding supplement called Weight Gain 4000.