Two years ago, when Kristen Stewart hosted SNL for the first time, she pulled a Charles Rocket and accidentally dropped the F-bomb. (Don’t recognize the name of Charles Rocket? That’s sort of the point.) But Stewart, who’s about to be featured as one of the stars of the latest movie reboot of Charlie’s Angels, is a big enough star to overcome her F***ing faux pas, and is scheduled to host tonight, again. Musical guest: Coldplay.