South Park S07 E05 Fat Butt and Pancake Head

"Four boys. One f**ked-up town."

For a report on Cultural Diversity, Cartman chooses to do one on Latinos in the arts with the help of a Jennifer Lopez hand puppet. Later, at the mall, the puppet insists they make a music video, which launches the hand puppet's musical career. There's just one problem, the REAL J-Lo shows up to protest the hand's authenticity.