The absolute worst are drivers who do the MGIF thing then immediately do a left turn right in front of you!
Edit: Slight correction - the absolute worst were the kids who thought it would be amusing to throw a brick at me while I was commuting by bike through the outskirts of Edinburgh. Fortunately their aim wasn't very good.
Edit: Slight correction - the absolute worst were the kids who thought it would be amusing to throw a brick at me while I was commuting by bike through the outskirts of Edinburgh. Fortunately their aim wasn't very good.