Weight Gain 4000

"Weight Gain 4000" is the second episode 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.

The episode was written and directed by series co-founders Trey Parker and Matt Stone and was rated TV-MA in the United States. After the South Park pilot episode "Cartman Gets an Anal Probe" drew poor test audience results, Comedy Central requested a script for one more new episode before deciding whether to commit to a full series. The resulting script for "Weight Gain 4000" helped the network decide to pick up the show. Although the second episode to be produced, it was originally broadcast as the third episode. It was also the first South Park episode created completely using computers rather than construction paper.

Although some reviewers criticized the episode for its profanity and other material deemed offensive at the time of its original broadcast, several others felt "Weight Gain 4000" was a significant improvement over the pilot, particularly for its satirical element regarding American consumerism. The episode introduced such recurring characters as Jimbo Kern, Mayor McDaniels, Bebe Stevens and Clyde Donovan. The show's portrayal of Kathie Lee Gifford was the first time a celebrity was spoofed in South Park. Cartman's line "Beefcake" became one of the most popular catchphrases from the series.