Season 12. Episode 10. (It’s actually multiple episodes to tell the whole story). Pandemic After Peruvian Flute Bands are counted at 65 bands per square kilometer the government decides to round them up and get rid of them. In the mean time the boys who formed their own Peruvian flute band (they wanted to make money selling CD’s by gigging a local mall) get arrested. It turns out that the bands were all organized and they played world wide to save mankind from “The Furry Death”. Without Peruvian flute music gigantic guinea pigs come out of the earth to ravage mankind. Only the flute players knew this and without their music the world is thrown into chaos. I can’t imagine who writes this stuff but it’s hilarious. Do you have a favorite episode?