Anyone who has ever worked in the returns department of any retail store will tell you horror stories about what some people have the chutzpah to return.
I was at the service desk of a supermarket a few weeks ago, and there was a slice of cake among the returns. Someone had bought an entire cake, realized it was the wrong type when they got home, used it anyway, and returned the packaging with a single slice.
Unfortunately, the returns clerk had to follow store policy and give them a 100% refund, even though they didn’t deserve it.