Wearing a black ring on the right hand is becoming more popular with LS couples here in the US. Not that you need any special hat, ring or bracelet. You just know.
I've heard of a lot of things to designate or find people in the lifestyle but this has to be the craziest one yet. LOL!
Haven't heard that one, but have heard of the black ring. However wearing certain hats will change your personality I think, we've all seen it.
If someone is wearing a cowboy hat while having sexual relations with your partner, then it is probably a safe bet that they are a swinger, and so are you.