In honor of having Brian Williams as a guest last night, Jimmy Fallon et al. made another mash-up of him rapping. This time, he took on Snoop Dogg's "Gin and Juice." Then Brian Williams complained for seven minutes about how he's never said "hippity" and that Fallon has never mashed him up with Foxy Brown. Mr. Williams, if you want that to happen, you are going to have to report on more senators' ill na nas, and no one wants that.