The BBC is at the centre of a new decency row after it screened a porn star talking about sex acts he would like to perform on Lindsay Lohan and her lesbian lover.

Porn actor Ron Jeremy said he would ‘love’ a threesome with bisexual actress Lohan, 22, and her partner, DJ Samantha Ronson, 31.

Jeremy, 55, made further explicit remarks about what he would like to do with the Hollywood couple.

During BBC3’s celebrity review of the year, Most Annoying People 2008, another interviewee, DJ Spoony, also referred to lesbians as ‘munters and mingers’.

Conservative MP Ann Widdecombe has demanded to know who sanctioned broadcast of the pre-recorded programme.

She accused the BBC of learning nothing from the Sachsgate fiasco and branded the Corporation ‘institutionally indecent’.

Jeremy, who has appeared in almost 2,000 hardcore movies, said of Lohan and Ronson: ‘These two girls are very good-looking. I would love to be in the middle of that.

‘They will do each other, do me, do each other, do me, back and forth.’

Captioned on-screen as a ‘porn legend’, Jeremy also said of Lohan: ‘Men are wishing they could be with her and change her mind, thinking “Yeah, she is a lesbian now because she never met me.” ’

BBC Radio 5 Live presenter Spoony, 38, said of lesbians: ‘Let the munters and mingers get each other. That’s cool because nobody wants them.’

But referring to Mean Girls star Lohan and Ronson, he added: ‘When they’re hot and fit – Hollywood superstars – they should be saved for the guys.’

The pre-recorded show was broadcast at 9pm on December 29 and repeated throughout the New Year period.

Ronson was deemed the 43rd most annoying person of 2008 out of 100 named and shamed.

Narrator Richard Bacon claimed that she had ‘dragged out the year’s worst-kept Hollywood secret that she and one-time man-eater Lindsay Lohan were lovers’.

The programme, which is still available on BBC iPlayer, has outraged campaigners for decency in the media and gay rights activists.

Conservative MP Ann Widdecombe said: ‘What was their reasoning behind choosing a porn star as an interviewee at all and why was the pre-recorded show then screened? Who sanctioned it?

‘You would think that following the debacle with Jonathan Ross and Russell Brand, they would have gone out of their way to ensure that anything going out was within the limits of decency.

‘This was a holiday period when children tend to stay up later and there is a strong risk that children would have seen it.

‘Indecency is just ingrained in the BBC. They are institutionally indecent. They don’t realise that what they think is funny is not what other people think is funny.

‘They cannot step back and see what they are showing through different eyes and it will take an awful lot of work to change the BBC’s mindset.’