monkey humping a football

noun2

1. •
   (vulgar) Energetic but useless action, or a person engaged in such action.

   • The whole exercise was a monkey humping a football.
2. •
   (vulgar) A manner of riding a horse, motorcycle or other vehicle, in which the rider crouches forward and may bounce in the saddle.

   • This poseur was riding like a monkey humping a football, but I blew past him.