This song really was a good start to the movie

South Park: Bigger, Longer & Uncut (Music From And Inspired By The Motion Picture)

I Can Change from South Park Bigger, Longer, and Uncut

The song is from South Park: The End of Obesity special on Paramount+.

South Park belongs to Matt Stone and Trey Parker.

Lemmiwinks is the gerbil formerly belonging to the fourth grade class at South Park Elementary.

South Park:Bigger Longer And Uncut Up There