It's a bird, it's a plane, it's a pen?

So most of you who know me, know that I am diabetic. As such, I have to carry around my insulin pen when I go out to eat so that I can take my medicine before I eat. Often, we sit at the bar, and because my pen is rather large and I don't carry a purse, I lay the pen on the bar. You would be amazed by the number of idiots who feel the need to question me about it or even actually pick it up. What on earth would possess someone to pick up something that did not belong to them and mess around with it? Furthermore, it clearly says Humalog Insulin Pen. This is NOT a writing utensil, it is not yours, leave it the hell alone!