Jack Whitehall mortified as his Dad tells the nation about his extremely large penis.

It's not often you leave a comedian stumped for words or so scarlet you could fry an egg on their face from the heat alone.

Jack Whitehall was a victim of such moritification last night when on their new BBC chat show (Backchat), in which the guests such as Jeremy Paxman were discussing their issues with M&S underwear designs, host Michael Whitehall revealed that his main issue with their undies stemmed from the fact that his penis was too large, therefore stretching the material and testing its alleged shoddy quality.

"The problem I have is the elastic. I shouldn't say this in front of you [Jack], but I'm very well hung... I need very strong elasticity in an underpant. Once it starts loosening up, all hell breaks loose."

Cue Whitehall blushing into a deep shade of purple.

Then taking it even further, Daddy Whitehall told the audience that Jack too was well endowed, like his father. "Jack has inherited some very good things from me, and that is one of them."

Cue all former Whitehall naysayers looking to young Jack in an entirely new light (and in the direction of his package).

Well, better this than have your dad revela that it's NOT one of the things you inherited from him, right Jack?