A person who, at
the peak of a tough situation, offers an idea that couldn't
possibly ever help anyone in anyway. This idea could also cause more
problems and create a worse situation.
In the office
the printer has caught fire. John comes over and says "
Why don't we all throw paper on it to put it out?"
John would be considered a
nonsensical jockey in this situatuon because his idea couldn't possibly help and may make matters worse.