On my bike....

I just scream into my helmet...

but I have been known to ride along side offending car and look in (with my blue visor) and stare at them, gets them a little off balance.... a gesture is sometimes needed also.

In the car.....

I am known for my complaining.. but thats about it, the occasionaly gesture but only on special occasions... Vauxhall Nova full of 11 year olds for example.

K