Guess which sex act Justin Bieber refused to perform on SNL this weekend

Saturday Night Live celebrated its 100th digital short this weekend, and it was full of star power, including the return of crazy Natalie Portman, Michael Bolton as Captain Jack Sparrow and Justin Timberlake as the crooner who sings about having his member inside a box. Even Justin Bieber got in on the fun, taking partial credit for the success of the digital short series. He did a great job, competing with Kristen Wiig as a Body Fusion girl and Jon Hamm as a sexy saxophone player. The video needed the contrast from the boy wonder, since the subject matter was a little, um, adult. (Just watch, it’s hilarious.)