Awson, man, I know how you feel - trust me, I pretty much felt the same for a long time. But you know yourself that A) it isn't meant to be spiteful, and B) that responding the way you just did is probably the worst way to. 

Making it all into a "thing" is the last thing you want, considering how you feel about it. So don't. Maybe they used to gang up on you, but they don't really do it now... unless you draw attention to it, by reacting as you did. Then, of course...

So don't feel patronised when I say this, but [i]take a chill pill[/i]. You're welcome to think they're dickheads, and if you do, then don't let whatever they say bother you. Who cares what a dickhead says anyway?