No one really likes to have a car parked right next to them. There's the chance of getting dinged, it's harder to back out, and if they get too close, you have to squeeze to get out. So here's a fix for all of that.
Just put the sign pictured above in your window after you park, and voilà!
No word on whether the person with the sign was actually a bigger person, but it doesn't even really matter!