Back in the 70s people would have a pampas grass as an indication that they played, is wearing a Key on a chain a sign that you are obedient of a mistress or master or is it a padlock? Are they all urban legends?
Although I have not seen, I have heard that a woman wearing a black ring is a sign that she is a swinger and also anklets, toe rings and thumb rings are another. But it would be good if there was something more obvious for identifying other like minded people. What signs do you yourself use?