Stefon on St. Patrick's Day (Season 43, 2018) Hader's back hosting again, so of course Stefon's going to give us the names of the hottest clubs to hit up on St. Patrick's Day. Our favourite bit here has to be when John Mulaney (who cocreated Stefon's character) pops up as Shy, Stefon's lawyer who's an attorney and a conceptual piss artist. And yes, it's pretty obvious that Mulaney will undoubtedly make Hader break character just like that.