He saw the scowl and then her reply. Sigh. Jokes weren't exactly funnier when explained, but he went for it anyway. "The joke about the ceiling. Over your head. Because that's where the ceiling is," he said, pointing. "If we were outside I'd have said sky. Jumprope is a long rope with weighted handles on either side for jumping or skipping over for fun or something. Always looked like too much work to me," he said, shrugging. "Who wants to be fit and in shape? People just expect more from you when you are. Anyway the joke, since you skip rope with a jump rope is 'ah, skip it,' since you skip a jumprope. Get it?"