One of my favorite things to do, especially when I see someone staring at my chest is to have them touch my Defibulator. Reactions vary, though my favorite ones are the ones that people totally gross out on it. The grimace on their faces are classic! It also breaks the ice, people kinda calm down and laugh.
I don’t hide my Defibulator, I think it has become for of a badge of honor. I survived something not many do. But at the same time I do have issues with it, it is a foreign object in my chest with wires that go into my heart. It also keeps track of my heart rate and rhythms, it’s an intrusive little bastard.