Always Check Your Backseat
A girl was traveling to visit a friend, and stopped to get gas. When she attempted to return to her car the gas station attendant starting yelling at her and telling her she did not pay yet.
When she went back in to argue about having already paid the attendant told her he just wanted to get her back in because he saw someone crawl in the backseat of her car, and that he had already called the police.