"If You're Happy and You Know It" is a children's song featured in the Season Four episode "Chef Goes Nanners".
Background[]
The Ku Klux Klan expresses their support in keeping the South Park Flag the same way, raising concerns among other flag supporters. Two of the supporters, Jimbo and Ned, decide to infiltrate a nighttime meeting of the Klan members, disguise as members themselves, and convince the group to switch sides. As Jimbo and Ned quietly leave the group, the Klan begins to play a game known as "Whose got the silliest thing on under their robe?", with the members lining up and displaying various costumes under their robes as the songs play in the background.
Lyrics[]
If you're happy and you know it, clap your hands!
If you're happy and you know it, clap your hands!
If you're happy and you know it, then your face will surely show it;
If you're happy and you know it, clap your hands!