He grinned, now that the conversation was going his way. "Well, ya'see," he said, conspiratorially, "that's something you won't believe until you see it for yourself. Which is why I'm going to demonstrate it for you, right this minute!"

He put his hand on the wall, looking at her. "Anddd... go!"

Then he was gone, slipping over the large brick wall and not coming back. But he had been right about one thing. You did have to see to believe.