The Big Bang Theory Season 2 Episode 20: The Hofstadter Isotope

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First aired on April 13, 2009

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A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.


You're probably thinking, "the comic book store, on a Thursday? Why I've fallen down the rabbit hole and into a land of madness." What you have failed to take into account, Penny, is that this is "Anything Can Happen Thursday".

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