Mrs. Invert: "It was great, the kids had a lot of fun."
Dr. Grumpy: "You guys go on the roller coasters?"
Mrs. Invert: "My kids did. I can't do those."
Dr. Grumpy: "My wife is the same way."
Mrs. Invert: "It's a medical issue. I can't go upside down. A doctor I once saw said it would make my brain fall out, and I'd die."