I had a woman, a preacher's wife no less, throw a bag of limes at me because the sign said they were X dollars per pound and I charged her 15 cents apiece. Yes, we had changed the price. Yes we had forgotten to change the sign. The thing was, she was getting them CHEAPER at the new price. She didn't care, would rather throw stuff at the HS girl who was trying to explain they were on sale.
Early lessons of humanity, right there.
Her husband was really nice. My cow orker and I called HER Mint Julep because she wore the ugliest mint green church-bitch suit you ever saw!