British Prime Minister David Cameron had harsh words for the Fox News guest who on Sunday said the British city of Birmingham was “totally Muslim.”

During an interview on Monday with ITV News, Cameron called Fox News “terrorism expert” Steven Emerson a “complete idiot” over the comments.

“When I heard this, frankly, I choked on my porridge and I thought it must be April Fool’s Day,” Cameron said, “this guy is clearly a complete idiot.”

“What he should do is actually look at Birmingham,” Cameron continued, “and see what a fantastic example it is of bringing people together of different faiths, different backgrounds and actually building a world-class, brilliant city with a great and strong economy.”

Emerson apologized on Sunday for the comments made during his appearance on “Justice with Judge Jeanine,” calling them an “inexcusable error.”

Watch the video below, via Crooks And Liars: