I mean specifically people who have been around for a while.
That kid has been around for almost ten years and I used to react to him. In the last two years I really have not reacted to his games, until today. I would think out in the last two years he would give up. Yet he still tries. I'm not sure why my image is the way it is its not accurate of me, but whatever. I think that leads to this type of stuff.
Some people try me because I am quite I'm sure of. Maybe they're used to quiet people reacting the way they want to. I mean people who I have not really met or known well.
Others probably perceive people who are quiet to be of lower social status than themselves; they see u as an easy target.
They're perceptions don't define u, however, and as long as u don't elicit a reaction, you defeat them at their game.
Not reacting to their insults doesn't necessarily mean not responding.
If I see their comment as offensive but non-malicious in intent, then I would probably do what kidd suggested and feed it back to them with some witty remark.
If their comment was meant to harm me in some way, then I would probably just look at them and maybe shake my head or give them a "are you retarded?" scowl.