People who park shoddily

I really really hate people who can't park their cars properly. I bet you must've come across a twat who parks so close to the lines, you can't reasonably park your car centrally enough to be able to get out without smacking the other person's car next to you. The worst I saw was a van which was parked over two spaces, the selfish idiot! This is why I should carry around a pad of A4 paper with a pen and next time I see a car which hasn't been parked properly, I will get a piece of paper, write on it "TWAT!" and put it on their windscreen!