King of the Hill - Season 5 Episode 10 -

Hank discovers that he is not a native Texan: he was actually born in New York City, when Cotton took his wife there as part of a plot to kill Fidel Castro. When Hank confronts his father about this, Cotton offers to help Hank become a "real Texan." But it turns out that Cotton is just making Hank the fall guy for yet another Castro-killing scheme.