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Tory Jacob Rees-Mogg was today forced to deny "posh totty" throw themselves at him because of the size of his testes.

The astonishing denial came during an appearance on ITV's Peston on Sunday, where an author was claiming human males have problems with infidelity because they have big balls.

Tim Samuels, author of Who Stole My Spear, a lament for the loss of masculinity in the modern era, suggested the arch- Conservative backbencher probably struggled to bat away amorous attention at Tory events.

He said: "I think a lot of men - and women - do struggle with monogamy. I mean, you [Jacob] probably find at Tory conferences that you get a lot of posh totty throwing themselves at you."

Mr Rees-Mogg was taken aback.

"Me?" he exclaimed, flabbergasted. "No. No, no. Certainly not. I'm shocked."

(Image: Tim Anderson/ Trinity Mirror)

Mr Samuels went on: "But it comes down to our physiological wiring, based on the size of our testes compared to other apes would suggest that we're mildly polygamous."

Mr Rees-Mogg disagreed with the premise of Mr Samuels book.

The book suggests men find modern life "out of kilter" with the caveman bodies we inhabit, and this has created a gender crisis. He says "masculinity is something we need to take seriously."

He even suggests this imbalance between 'hunter gatherer' physiology and modern desk-bound life could have led to led to ramifications such as alienated young people joining ISIS and blue-collar workers supporting Donald Trump .

(Image: Ben Pruchnie)

Asked if he was suffering from an existential crisis of masculinity, Jacob Rees-Mogg replied: "No. Not at all. I don't find there's a problem. I'm completely comfortable.

"I really enjoyed the book...but I don't agree that there's this much of a problem.

"I also think that the period of change is much longer than Tim suggests. I think there has been a 'civilisation' of men, from the time we came out of caves, and that if you were the peasant farmer in the 12th Century, you may not have felt in control of anything, even though you could tell your wife what to do.

"The changes in the last hundred years to do with the equality of women, are merely a continuing development of the civilisation of mankind."