Pony Twinkleheels in "Jumping Mud Puddles"

After that Johnnie kept a sharp eye out for mud puddles. When he knew that Twinkleheels was going to jump one he had no trouble in sticking to his seat. Soon Johnnie decided once more that it would be easy to learn to be a circus rider. Certainly it was no trick at all to sit on Twinkleheels' bare back so long as he knew what the pony was going to do. It was as easy as walking a tight rope. And that was a feat that Johnnie Green had already mastered. He only broke a collar bone learning that.