As well as being open-minded, you've got to have a decent understanding of symbolism if you fancy yourself as a swinger.

Although partner swapping has become a lot more accepted by society in recent years, there's still a large number of people who consider it a taboo topic.

So, the sexually adventurous tend to value discretion very highly - however, flying under the radar like this also means that finding like-minded people can be a struggle.

Which is why members of the swinging community came up with a few secret signals which help them let others know that they're part of the same club.

Most people already know a couple of the obvious ones - such as sticking some pampas gras in the garden or an the upside-down pineapple on your front door.

But for those who prefer something a bit more subtle, you can also just simply slip a black ring onto a finger on your right hand.

As well as being considered as a badge of honour by some people in the swinging sphere, wearing a black ring essentially tells other polyamorous folk that you're game.

According to The Swinger Symbol (SS), some people go the whole hog and wear jewellery which is also emblazoned with 'a swing' - a symbol which looks like this \_/ - to ensure they're getting the message out loud and clear.