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Oops! John Stamos Flashes ‘Beach Buns’ While Performing With Beach Boys

John Stamos split his pants. Have mercy! John Stamos suffered a wardrobe malfunction over the weekend while performing as a special guest of the Beach Boys. The Fuller House star’s pants ripped while jamming onstage with the iconic band Sunday at NYCB Theatre at Westbury in Long Island, N.Y. But because it was a PG situation (no cheeks!), the age-defying actor rocked on — and later posted a video of it on Instagram … ’cause Uncle Jesse is cool like that.