Overheard on the Airplane

So I'm sitting on a flight, when the old-ish man sitting next to me gestures to my ipod, and goes "What's that?" It was in an iPod sock/cozy, so I thought that was the mystery, so I pulled it out and said, "my iPod."

His response, "Oh, I thought maybe you had a gun."

So flabbergasted was I, my mind absolutely overflowing with questions--Um, WHAT? What are you talking about sir? Do you know something I don't know or do you know NOTHING AT ALL? When did they start making small, rectangular guns with white wires sticking out? Would said gun be made of plastic or wood, such that it would remain undetected? If I had gone to such lengths to obtain such a novel weapon, would I really just admit it, "Oh, this? It's my small, rectangular, plastic gun." Is this meant to be funny? Cuz last I checked jokes on airplanes about guns aren't really the order of the day...--so flabbergasted that I was wholly incapable of summoning my average level of sarcasm and could merely muster a "yeah... guns... they should really get someone to check for those..."