From what I can tell they remind me of college frat boys, or at least very similar. Might just be one of those things you can only know if you were brought up with it... like navajo.
To get on with the discussion, I know what you mean about people honking when your walking. I never quite understood what they're trying to accomplish! At first I used to wave, then as I got more annoyed it turned into me flippin em off yelling "DOES MOM KNOW YOUR DRIVING HER CAR!?!?!" which usually results in them stopping in hopes of intimidating me... again, confusion on my part as to what they're trying to accomplish
Chavs are very similar to Neds. heh
Okay, I'll give a better description: They usually hang in groups, drink, shout and either try and irritate or intimidate. A lot of them delight in shouting out 'smart' remarks at anyone passing to impress their posse with their lack of restraint.
It's a bit like dealing with 5 years olds, they spout and point at anything they see and enjoy a bit of a rough play and tumble. They often haven't developed the thing that is so important for being considered worthy and respected as you grow up - conscience.
Still, sometimes you can meet some nice ones.