The fourth season of the animated television series, Aqua Teen Hunger Force originally aired in the United States on Cartoon Network's late night programming block, Adult Swim. Season four started on December 4, 2005 with "Dirtfoot" and ended with "Carl Wash", with a total of thirteen episodes. "Carl Wash" originally made two unannounced stealth airings on December 22, 2006 and January 7, 2007 and later made its official debut on March 25, 2007. Aqua Teen Hunger Force is about the surreal adventures and antics of three anthropomorphic fast food items: Master Shake, Frylock, and Meatwad, who live together as roommates and frequently interact with their human next-door neighbor, Carl Brutananadilewski in a suburban neighborhood in South New Jersey. In May 2015, this season became available