When can a horse move while standing still?

"When can a horse move while standing still?" Have you figured it out yet? Here's your answer! A horse can move while standing still when it's a wooden horse on a Merry-Go-Round! [Original Riddle by MarashGirl©2022] Above riddle written in memory of Uncle Paul and Newton's Norumbega Park where Uncle Paul always took us kids on the Fourth of July!!