(I work at a dinosaur trail, where people can walk through the forest and look at robotic dinosaurs. On this particular day, a guest with one arm comes onto the trail. About half an hour later, he comes back out.)

Me: “So, did you enjoy the trail?”

Guest: “I got my arm bit off.”

Coworker: *without skipping a beat* “I’m sorry, sir. We don’t give refunds.”