(The previous customer had purchased nineteen whole chickens. The packaging leaked chicken blood/juice onto the cashier belt.)

Me: “Just one second, ma’am. I’m going to clean the belt off first. There’s a ton of chicken blood on it and it’s pretty nasty.”

Customer: “Excuse me? Do you think I’m stupid?”

Me: “I’m sorry, I don’t quite get what you mean.”

Customer: “I’m not an idiot. A chicken is a bird, and birds don’t bleed!”