Monkey-humping-a-football Definition

noun
(vulgar) Energetic but useless action, or a person engaged in such action.
The whole exercise was a monkey humping a football.
Wiktionary
(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.
Wiktionary