I once encountered a lady who might be considered an SS in a parking lot ... or possibly a scam artist.
My young daughter and I had gone into Safeway to pick up a few things. When we came out, there was a woman standing beside our car, purple with rage. As soon as she realized I was the car's driver, she started screaming at me, saying "YOU OPENED YOUR DOOR INTO MINE! JUST LOOK AT ALL THE DAMAGE!" It looked like my daughter (who was the passenger, of course) had opened her door carelessly, leaving very small nick in the woman's driver-side door. There was a fleck of blue paint in the nick that MIGHT have come from our car.
Okay, fine. The point wasn't the very small amount of damage, the point was that it looked like I was responsible for it, and I immediately said "You're right. Let's exchange information." She kept screaming at me for a full minute. (I don't know whether she'd worked up a head of steam waiting for me to come out of Safeway and was going to deliver her speech no matter what I said, or whether she was just that good an actress.)
She finally calmed down enough for us to exchange information, and then she said that she didn't want to go through our insurance because her rates would go up. She'd call her friend, who was a mechanic, and he'd give her an estimate. That's when I smelled a scam, but I didn't know what else I could do - I couldn't prove we hadn't made the dent.
A few days later, she phoned to give me the estimate, and once again she sounded very suspicious and angry on the phone. Even my saying "Fine, I'll write you a cheque" didn't calm her down. Sheesh.
Now, of course, I'm wondering if she deliberately parked beside a blue car, hoping that she'd get pre-existing damage fixed for free ...