When Hank and Dale find more interest in the activities of the other's son, they switch roles, Hank helps Joseph with sports, and Dale reads lines for a play with Bobby. After thinking about their differences, Dale comes to the conclusion, that he is not Josephs biological father--an alien is.
Season 6 Episode 14 of King of the Hill resulted in a 0.00 rating in the 18-49 demographic.
King of the Hill is another animation hit from Beavis and Butthead creator Mike Judge, who also voices the starring character Hank Hill, a propane gas salesman in the fictional town Arlen, Texas. Hank is often besieged by the idiosyncrasies of society, but he finds (some) serenity in his home-life with his wife, substitute Spanish teacher Peggy, his awkward son Bobby and his live-in niece-in-law Luanne Platter. Adding flavor to the ordinary dish the series serves are Hank's friends, divorcee military barber Bill Dauterive, paranoid Dale Gribble (with an obsession with Government conspiracy theories) and gibberish spouting Boomhauer.