Why Can't JGL's Grandma See His New Movie?

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Joseph Gordon-Levitt is one of the guests on Saturday's all-new episode of The Nerdist and ETonline scored an exclusive clip!
In the clip, also featuring Community star Gillian Jacobs, JGL opens up about his new movie, Don Jon, and explains why his grandmother might be banned from ever watching his directorial debut!
The Nerdist airs Saturdays at 10 p.m. on BBC America.