Wether its a calm "what's this cabbage up to?" or vein busting anger outbursts at the wilful dangerous stupidity you just witnessed, what is it that people do when driving / sharing our roads that annoys you the most?
Hoons? Speeding? Driving too slow? Drivers on phones? Right lane hogs? Inattention? Failing to stop, give way, indicate? Cyclists?
Riding a motorcycle, not stopping/giving way winds me up, I always feel like they haven't seen me but it seems to be intentional most of the time. And bloody mobile phones.