Simon Cowell says David Walliams is "annoying" on this year's Britain's Got Talent.
The TV boss and music mogul, who is on the judging panel with the comedian, along with Amanda Holden and Alesha Dixon, insists their on-screen banter has become too much.
He said: "He's really got annoying this year. He was kind of amusing before but God forbid I make the audience laugh more than he does - he gets quite dark."
Asked if he actually likes David, he replied: "I was thinking about it when I was working with him - it's like having a child who's suddenly turned into a giant at the age of 11. He is mentally an 11 year old in this huge body. He has got a kind side but he can be very, very annoying to work with."
Simon admits he noticed Alesha and Amanda had a "girl power" pact last year and fears they could gang up against the men once again.
He said: "I did notice this awful pact between the two girls last year and the so-called girl power, and I think they will probably do the same thing again!"
The 54-year-old star also claims he isn't always impressed by people's back stories in auditions, especially when it comes to contestants not having any skills.
He said: "I'm put off when it becomes more important than their talent and I hate it when people are actually revelling in their back stories. Sometimes they don't even have an audition, they just come with a back story and can't actually do anything!
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