The Simpsons. This is for people who are absolutely commited to The Simpsons?

In the Simpsons Episode simpsoncalifragilisticexpiala annoyed grunt cious the 13th episode of season eight. While Sherry Bobbins sings "That's the American way" and it goes to the lines " The policeman on the beat needs some time to rest his feet." in the background, you see Snake. Why is his hair blue? O_o