Simon Cowell has jokingly compared David Walliams to a "big dog".

David Walliams and Simon Cowell

David Walliams and Simon Cowell

The 57-year-old entertainment mogul will once again return to the judging panel for 'Britain's Got Talent' alongside the comedian when the show returns to television screens on Saturday (15.04.17) night, and has joked that working with David is like being around an overly excited pooch.

He said: "David's a giant. It's like having a mountain behind you. A couple of times he has actually fallen on me. I'm thinking: 'I'm going to break my neck here one day.' But I can't say anything because if I say: 'Don't do it,' it gets worse. So I have to keep my mouth shut.

"Someone asked me the other day how I'd sum David up. You know when you had an auntie who had a big dog and, if you went there for tea, it would hump your leg? The first couple of times it's like, 'Can you get off my leg, please?' After the third time you don't even notice it. That's sort of how I view my relationship with David. He is verging on the insane. I do believe that."

And fellow judge Alesha Dixon has also taken note of the 45 year old's wild ways too, as she recalled one instance where the star "pulled his trousers down" on camera.

She said: "Oh my goodness, did you hear what David did on the last day of auditions? It was the last act of the tour, so Amanda [Holden] and I got up on the desk dancing because we were celebrating.

"Then David pulled his trousers down. I shouldn't really laugh but it was hilarious. It was one of those moments where I just never saw it coming. As outrageous as he can be, even I was shocked. Put it this way, we saw a lot.

Straight afterwards we went to the producers: 'Can you actually show that?' So we'll have to wait and see whether it makes the final cut."

The 38-year-old singer does "feel a little bit sorry" for Simon though, as she admits David's antics can be a bit much.

She told The Sun newspaper: "I am actually starting to feel a little bit sorry for Simon. He literally spends most of the day trying not to be manhandled by David. David's attempting to drag him out of his chair to dance and Simon doesn't want to. One day that chair is going to go flying.

"David just won't stop. He's like a dog with a bone. Simon has found a way to have a sense of humour about it and, at the same time, it's very funny to watch."

'Britain's Got Talent' starts Saturday (15.04.17) at 8pm on ITV.

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