Him: "I'm going to the horse track on my day off."
Me: "Really? I've never been to a horse track."
Him: "Here's a list of the races."
Me: "There's a horse named GORDIE HOW! Ha ha! Put $10 on Gordie How to win for me."
Him: "Okay."

Later:

Him: "Hey, I put $3 on Gordie to win, place, or show. And he won!"
Me: "But you only bet $3."
Him: "Yes."
Me: "And I told you to bet $10. Just on him placing first."
Him: "Right. I bet $3 he'd win, place, or show."
Me: "Right. So you screwed up my money."
Him: "No! Also, his odds had gone all weird. He was like, one to nine odds."
Me: "So, you screwed up my money."
Him: "No!"
Me: "So I won a dollar?"
Him: "No, three cents."
Me: "On account of you not betting $10 on him to win, like I asked."
Him: "Right."
Me: "So, you screwed up my money?"
Him: "A little bit."