Britain’s Got Talent: ‘Legend’ David Walliams drops trousers and flashes bum tattoo at Simon Cowell

David Walliams stunned viewers when he dropped his trousers to bare his bottom on Britain’s Got More Talent.

The funny man, 45, left Simon Cowell feeling “sick” as he flashed on live TV.

Walliams stripped off after host Stephen Mulhern reminded the panel of a man who had had Ant and Dec’s faces inked on his bottom.

He then revealed to Cowell that one of the judges had got a tattoo of him, and asked him to guess which one.

Cowell correctly guessed Walliams, before the comedian stood up and strode towards Cowell.

Much to Cowell’s surprise he undid his trousers and pulled down his white pants to reveal tattoo’s of his and Cowell’s faces above the caption: “Forever in love.”

Cowell shielded his eyes from the sight of his colleague’s behind as Mulhern, Amanda Holden and Alesha Dixon burst out laughing.

Unable to stomach the stunt, Cowell stood up and walked away saying: “I’m not paid enough money to deal with that.

“Seriously? I actually feel sick.”

He added: “Why are you laughing? You are a weirdo. I didn't like it.”

Holden also covered her face, while Dixon said he had “taken it to the next level”.

Viewers were left in stitches, with one hailing Walliams as a “legend”.

Magic duo DNA and teen singer Kyle Tomlinson were the first acts sent through to the live final on Monday night's show, which faced cheating accusations after a technical glitch.

St Patrick's Junior Choir were seconds into their performance of Katy Perry's Roar when Ant and Dec rushed on stage to halt them.

While the issue was resolved a backing track could be heard of the children singing, prompting viewers to accuse them of miming.

Britain's Got Talent it on ITV tonight at 7:30pm. Britain's Got More Talent is on ITV 2 at 10pm.