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Hank Isn't Bobby's Biological Father On King Of The Hill And It's Obvious If You Pay Attention

Updated April 24, 2019 54.4k votes 11.1k voters 825.0k views12 items

List RulesVote up the most believable pieces of evidence that indicate Hank is not Bobby's father.

King of the Hill is one of the best adult animated shows that ran for 13 seasons from 1997 to 2009. It followed the everyday life of Hank Hill, a propane salesman, and the lives of his friends and family in Arlen, Texas. But you already knew that. You're here for the good stuff, like all of the crazy King of the Hill fan theories, weird facts, and things you never noticed about the show. Like how Hank isn't Bobby's father... 

Sure, there are plenty of awesome Hank and Bobby moments, but have you ever noticed that Bobby looks exactly like Bill? Or that he and Hank never seem to see eye to eye? What about that time Bill passed on his secret "family recipe?" The facts have been right in front of your face all along. Check out all the evidence that Hank is not Bobby's real father and vote up the best reasons! 

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  • 1

    Hank Has A Narrow Urethra And A Low Sperm Count

    Video: YouTube

    The Hills are pretty old-fashioned people. They don't talk about sex very often, but in Episode 39, Hank mentions that he has a narrow urethra, which prevents him from being able to father children with Peggy.

    Later, in Season 3, Peggy is having trouble getting pregnant, and after 12 tests, she sends Hank to the doctor to discover he has a low sperm count

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  • 2

    Bill Admits To Sleeping With Peggy And Hank Dismisses It

    Late in the series, Bill actually admits to sleeping with Peggy. In the episode titled "Hank's On Board," the gang find themselves in a pretty sticky situation. They're stranded at sea and worried that they won't survive, so in a moment of panic, they all start revealing their deepest, darkest secrets.

    After everyone spills their beans, Bill is the last to "get something off his chest." He says, "I have a confession, too, Hank. In a moment of weakness, on a dark rainy night, I slept with Peggy." Hank simply writes it off and says, "No, you didn't, Bill," and that was the end of it. Some fans believe this is another example of everyone ignoring what they already know. 

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  • 3

    Bobby Has An Obvious Physical Likeness To Bill And Dissimilarity To Hank

    Bobby and Bill look exactly alike. They're both overweight, they're both short, and they both have huge appetites. Bobby and Hank have almost nothing in common, and although Bobby does eventually start taking interest in things like hunting and grilling, his physical attributes look nothing like Hank's. 

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  • 4

    Bill Passes On The Dauterive Family Recipe To Bobby To Keep The Family Tradition Alive

    In the episode "Blood and Sauce," Bill becomes depressed after learning that Dale is passing his legacy onto young Joseph because Bill has no one like that. Sparked by a confrontation with Hank about how he doesn't like grilling, Bobby offers to help Bill prepare his secret family recipe for a cookout.

    After getting in an argument with his brother about preserving the family name, Bill decides to teach Bobby how to make his secret family recipe "so that his family name will be remembered." 

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