Can you be more inconsiderate when parking?

One thing that most big urban dwellers have to deal with is parking. If one is lucky enough, his/her work will have parking spaces. And for most business to florish in the city, they need to provide parking for their clients. And even with parking available, it is often hard to find a spot. So it vexes me really when I see a car parked outside the parallel lines and end up taking two spaces instead of one. These drivers are major assholes who are selfish and inconsiderate to the needs of others. If I see one, I am often tempted to take a key and run it along the side of their car just to get back at them.