I have two collars. One is the typical studded black leather collar that I wear during play. Then the other one is stainless steel with a padlock that I wear 24/7. A few people I know understand what it means. But for vanilla people who ask I just tell them that it's a choker. It's easier to do that then to try to explain what it means. I live in the Bible Belt and there are too many straight-laced, conservative types here who don't think that sex should be anything but in the dark, missionary position style sex, so since I know I cannot change their way of thinking, I just let them think that it's just a piece of jewelry I wear.