We were watching a show on TV where a really fat guy had crust growing on his legs. I asked:

Would you rather eat a flake of that crust, or drink a cup of water from the toilet?

She got annoyed, and wouldn't answer, so I asked:

What if you were forced to divorce me if you didn't eat a flake of the leg crust?

She got irritated and said she was never eating any amount of the leg crust. When we went to bed, I just kept saying: I can't believe you'd divorce me. She finally told me to shut up. We had a good laugh.