Jeff Brazier left his co-stars and viewers shocked when he stripped naked in an episode of SAS: Who Dares Wins.
The TV star apologised as he told the others taking on Ant Middleton's SAS training in the name of charity that he needed to 'get his c**k out'.
Jeff took part in a particularly messy challenge as he was forced to endure extreme conditions alongside other stars, including Made in Chelsea's Sam Thompson and Loose Women's Andrea McLean.
After wrestling in thick mud, the participants were directed towards a row of sinks to wash off with nothing but a few taps spouting out freezing cold water.
As everyone struggled to lean themselves up, Jeff announced: "Guys, I'm so sorry, I'm going to have to get my c**k out, alright?"
One of the girls tells him: "It's okay, just get your c**k out."
Jeff then suggests: "Just pretend I'm your brother or something."
Jeff, 39, is seen whipping his trousers off, before later talking about it as he sat down for the cameras.
He said: "I'd say I'm in relatively good shape, I exercise and go to classes I'd say four times a week.
"I've averagely strong really, there's obviously much bigger men than me, but I've got a huge determination"
Then back at the showers, naked Jeff tells the others: "It's not looking as good as it normally does."
And he's told: "Don't make excuses, Jeff."
Jeff doesn't seem phased by his nudity as he runs around the camp, and it seems he has nothing to worry about.
Sam tells him: "Your missus must be so happy."
Jeff laughed about it after the episode aired.
He tweeted: "When they said you'll have to bare everything on SAS: Who Dares Wins I thought they meant vulnerability and pain. Little did I know they'd be showing that #Shrivel."
* Celebrity SAS: Who Dares Wins airs Sundays at 9pm on Channel 4
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