I usually just ignore it - even when I'm pedaling on a highway and some stupid teenagers decide to swerve at me while doing 70 mph, roll down the window and scream things at me - getting pissed or doing something stupid is what they want - isn't it funny when you make the cyclist crash?

I do try to get a license plate number, but getting pissed about it is probably just going to ruin my ride and possibly end up with me getting hurt.