WOW! Love all the comments, some I may use in the future! LOL!
I can't recall off hand anything that someone has said, other than, "Find anything good" or "Finding anything" or "What have you found". I think one time when on the beach on the Chesapeae Bay, some 'snotty teen rich boys and girls' (you can tell!).. I had my headphones on, but even though it looks like they are on fully, I always keep the left side off the ear so I can hear around me. I only listen to my detector with my right ear. They were making all kinds of noise and mocking what I was doing. I acted like I didn't see them or hear them. When I was leaving that area, I walked right past them and took out the headphones and told them, "if you're going to mock the sound, this is how it sounds. Get it right" and then I pulled some of my trash out (i.e., fish hooks, broken glass (found while scooping), wire, etc) and said, "now you don't have to worry about running around barefoot, I just saved you from a tetnus shot" ... they were quiet and kinda' surprised I heard them. Guess they thought with headphones on, I could not hear them. Then they wanted to ask questions, but I had better things to do! This beach area is where everyone fishes alot...by the Lessner Bridge (for those who are local to this area know where I'm talking about).
Then another time at another local beach, on the ocean side, where private homes line the beach and they think THEY own the beach...had a bunch of young teens throwing money in my direction. Of course I picked it up...if your stupid enough to toss me your money, I'm smart enough to pick it up and keep it. I did Thank them as I was leaving!
But unless someone approaches me, I don't pay much mind to folks like that. The two above was when I first started detecting.
I even had kids come up to me, try to grab the detector and say, "Let me do it"... ahhh... NO! Show manners and ask politely!
But ya'll have some great comments...thanks for sharing!