Shadoom,
I don't think its surprising or strange or "encouraging" that the conversation of piercings has come up with your wife and a coworker. I think people who are comfortable with each other and work together talk about a lot of things. I know we do at my place of business. (Of course, we just TALK....I can't imagine SHOWing...) So maybe there is a little somethin'/somethin' cooking there.