Andy Cohen Slams 'F-king Idiot' Joe Rogan for Endorsing Spencer Pratt for LA Mayor | Video

While discussing former "The Hills" star Spencer Pratt's run for Los Angeles mayor, Andy Cohen couldn't help but share his disgust for Joe Rogan after learning the podcaster endorsed Pratt. "Oh, Rogan," Cohen said sarcastically during a Tuesday taping of "Watch What Happens Live" on Bravo. "The Hills" Kristin Cavallari was the talk show's guest on Tuesday, and she was asked how she felt about Pratt's run. Watch the clip via TMZ below: Andy Cohen blasts Joe Rogan as a "f***ing idiot" over Spencer Pratt Mayor endorsement. : Bravo pic.twitter.com/dtarSgijje - TMZ (@TMZ) . . .