Conan O'Brien's "Clueless Gamer" series has seen him fail at some pretty awesome games, but he should be able to do just fine with the college favorite "Mario Kart." But with "Neighbors 2" stars Seth Rogen and Zac Efron along to make things interesting, this might just be the best installment yet — especially since by "make things interesting," Rogen and Efron mean drawing penises on O'Brien's face whenever he loses a round.

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