If you cant say something nice about James Corden , do as director Craig Duncan did and make a YouTube video about it.

Duncan recently released a 10-minute video about The Late Late Show host, who he called the most difficult and obnoxious presenter hes ever worked with.

Duncan says he was on set with Corden after the actors production company asked Duncan to direct a segment for the British show A League of Their Own in 2013 .

While watching the Cats actor rehearse, Duncan said that he witnessed Corden read off lines for the show and say, Thats not funny thats not funny. Its shit. We have to rewrite that. We have to rewrite this.