The carpark I use for work is a massive lot with no marked spaces (you do pay and display so it is legal etc).
Everyone uses their common sense and parks two rows next to each other. Then a new row starts leaving enough space for the car in front to back out.
As you can see from the diagram this twat decided to block around 12 cars in (mine included!)
Was I unreasonable to have written a note and called them a dick for blocking in so many people?