Britain's Got Talent judge David Walliams strips and dances for Sports Relief!

David Walliams (Wall of Fame Sky)

Despite probably feeling like death as he swam the River Thames for Sport Relief last year, Britain's Got Talent judge David Walliams still had the energy to entertain, as this video proves!

The newly appointed BGT judge will feature in a BBC documentary about his challenge this Thursday at 9PM on BBC One, and this promo clip suggests it's going to be full of laughs!

Catching a short bit of rest from the water in his hotel room, and dressed only in a pair of Speedos and a swimming cap, the Little Britain comic is seen showing off his moves to Abba's infamous Dancing Queen.

David requested the track from Radio 1's Scott Mills, saying: "Are you going to play Abba for me today? You know, you keep on saying you’re going to play a song for me, but it’s always the songs you want and never the ones I want.

"I bet you like Dancing Queen by Abba, it’s probably the best song ever recorded!"

He quipped: "You know it was written about me?"

Watch David dancing below!

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