They haven't seen it all: Playboy twins bewildered by CBB housemates' assertion that most UK men aren't circumcised

They may have lived in the Playboy mansion but it seems that twins Kristina and Karissa Shannon don't know everything about Hugh Hefner.

Kristina was left red-faced when a casual conversation in the living room yesterday turned to the subject of circumcision.

After admitting that it was normal for men in the US to be circumcised, Nicola McLean asked the twins if Hugh had had the procedure.

'How would we know?' Twins Kristina and Karissa Shannon were offended when asked if Hugh Hefner has been circumcised

'How the f**k would I know!' Kristina quickly replied.

Obviously worrying that she had offended the twins, Nicola then went on to say: 'Did you not ask him?'

The twins replied that they didn't and seemed eager to forget about Hugh and his private parts.

The odd conversation began when the group were discussing surgery.

Dirty conversation: The Playboy twins told the rest of the group that it is normal for men in the U.S. to have had the procedure

Trying to explain: Nicola gave it her best shot at describing an uncircumcised penis to the twins

Karissa and Kristina took it upon themselves to tell the group that it is normal for men to be circumcised stateside.

Nicola, Gareth and Frankie responded by saying that in the UK it is not so common and mainly done for medical or religious reasons.

The group then pondered on whether or not U.S. actor Michael Madsen was.

'Let Denise ask him,' Frankie joked, while Karissa headed into the bedroom to ask him.

Personal question: Karissa decided to ask Michael if he had been circumcised to which he replied 'yes'

The Reservoir Dogs star confirmed that he was and then muttered: 'What a question.'

Following her question about Hugh, Nicola then tried her best to explain to the twins what an uncircumcised penis looks like physically.

However, the mother-of-two couldn't stop laughing as she tried to describe it and Gareth soon stepped in to help.

The former rugby player explained that it can be ‘indoors or outdoors…blanket on or blanket off,' and also began laughing hysterically.

Being honest: Frankie Cocozza admitted to the girls that he hadn't had the surgery done which was normal in the UK

Read more: http://www.dailymail.co.uk/tvshowbiz/article-2091890/Celebrity-Big-Brother-2012-Kristina-Karissa-Shannon-UK-men-arent-circumcised.html#ixzz1keIsPaZb