If you are in a parking lot with many open spaces, find someone getting in or out of their car and attempt to park in the space next to them. Try to look as inconvenienced as possible. If you see them trying to pull through the lane in front of them, back into that spot. Find someone unloading their groceries into the side of their car as they take up two lanes. If you are unloading your groceries, leave your buggy in the space so that someone else has to move it to park. Time-saving tip, just park and walk instead of waiting on that space that is only two spots closer.