I have noticed pony-boys pulling carts that are strapped to their backs. One particular day I did see a male who was obviously very good at it. He was moving around the track with ease. His female driver barely used the crop on him. A bit was in his mouth, with reins that she was using to direct his movements, right or left. I also noticed that his cock was pulled back between his legs and tied off. There was a rope around his balls, that was long enough so the driver could pull on in case of a wrong move. That kept him concentrating properly.
Was this what I could look forward to?