Horsey ride?
Wow! This one was pretty hard to figure out. It’s timed and angled so perfectly that the mystery of the illusion doesn’t give itself away too freely. We think we finally figured out how it works, though. The dress of the woman to the left has black stripes on it, which line up perfectly with the man’s pants. His hand is placed on the railing, which is on the same height as the woman’s shoulder
The timing of the picture on the next page is superb.