Things only got worse after he interrupted comedian Kumail Nanjiani's set after Nanjiani made a snide comment about seeing stand-up from a pop star.
Mayer then hopped up on stage and made "accidentally racist" comments about Nanjian's ethnicity including purposely mispronouncing his name as "Kabul."
He also went on to pretend that he was masturbating to play on the term "getting off" when he was told to get off the stage!
Nanjiani reportedly kept his cool with the moron and went on to have a successful set.
John really needs to give the stand-up career a rest! When are these celebrities going to learn that just because you're good at one thing doesn't mean you're good at everything.
Maybe put out a fragrance or something instead!
[Image via HRC / WENN.]