Mad Men star Jon Hamm readdresses speculation he's well endowed after THAT photo sparked discussion about his manhood

Mad Men star Jon Hamm has endured plenty of speculation about the size of his man hood in recent years, with fans believing he was very well endowed. 

And the 45-year-old actor has spoken again about the 2012 images which sent the rumour mill into overdrive, seeming completely unfazed by fan interest.

The American star told News.com.au this week: 'By the way, as rumours go — not the worst.'  

Jon said the size of his package was 'fascinating' for his fans, but he just hasn't been able to get his head around why.

'It was a topic of fascination for other people — certainly not me,' Jon added.

It comes after he previously seemed quite embarrassed in past interviews about the talk. 

In 2013, the sex symbol told Rolling Stone while most of the talk is 'tongue-in-cheek,' it could get annoying.

'But it is a little rude,' he said.

'They're called "privates" for a reason.'

 'I'm wearing pants, for f***'s sake. Lay off.' 

He also said he hated the idea of people creating social media accounts about his private parts.