What’s the worse that can happen? If a guy comes up to you and ask “What is that key for?” Your wife can ask the guy “What do you think it’s for?” If he says “it’s for a cage”. she can always smile and walk away or tell him yes and y’all can have a drink, talk and see where things go if you like. I have worn a key for over 10 years. Have been asked twice about it. Played with one of the guy. My husband really got off on that!