Over the weekend, Justin Bieber celebrated girlfriend Sofia Richie‘s 18th birthday by flying down to Cabo in a private jet, as you do. Once they were safely ensconced in a private cabana at the Las Ventanas al Paraiso hotel, the two lovebirds played kissy-face for the photogs, before Justin turned and dropped trou, exposing his milky white buttocks for all the world to see. Of course, that leads us to the question: WOULD YOU? Sure he’s an idiot and an entitled douchebag and everything that’s wrong with celebrity culture, but really… if it’s in your face, and no one is looking, WOULD YOU? I mean, as far as asses go, it’s kind of magnificent. #Moonstruck (pics via OMGblog)