Ari Shaffir grew up Orthodox Jewish and spent two full years in a yeshiva in Israel. So he has some catching up to do when it comes to letting loose—the reason his comedy is so, frankly, filthy, perhaps? The now-American standup comic is truly gifted when it comes to skewing blue, and it seems to be working: with two-hour stand­up specials and his own late-night TV series coming up, he’s a force on-stage. As our own Guy MacPherson said in a review when he came here a few years ago, “Shaffir voices his darkest thoughts and shares squirm-inducing stories from his personal life to great comedic effect.” If we have you curious now, rest assured, the guy kills. Squirm for yourself at the Comedy MIX from Thursday through Saturday (February 18 to 20).