King of the Hill - Season 10 Episode 4 -

When Hank and Peggy try to clean up a historic Arlen landmark, they find out that the town was founded by harlots and was once a place of ill-repute. The new city manager uses the city's rediscovered history to turn the town into a tourist trap for the adult porn industry. Frustrated by the changes, Hank decides to move the family – that is, until he is aided by adult actress Candee.