REVEALED: Why some women are more vocal in bed - and it's NOTHING to do with having a good time

Even if you've never seen When Harry Met Sally , all you need to hear are those four words and an image of Meg Ryan in Katz's Deli - also known as the 'fake orgasm scene' - springs to mind.

G-spots , the female orgasm: How women enjoy sex (or not) is a topic frequently speculated on, studied, scrutinised - and depicted in a certain way.

Which, let's face it, is often as 'head thrown back, having the time of her life, making some noise and probably in matching underwear'.

It's the 'noise' part - or how vocal a person is - which has recently become the subject of a study.

Basically, are "copulatory vocalisations" the sign of a good time?

Or, as Meg Ryan was trying to prove, has being vocal become an easy way to dupe men?

Sadly, it seems like there may be something to the latter.

"There isn't a lot of research in this area," said Kristen Mark, a sexuality researcher at Indiana University told CNN , "but we're bombarded with images through mainstream media that tell us moaning is associated with orgasm and sexual pleasure.

"So it would be a fairly wise faking strategy to moan since men already tend to associate moaning with orgasm." Read more