Minutes ago, I walked through the office and mentioned to someone that I had to "piss like a racehorse." While I was performing said act, of course my mind started to wander and I started to think about this term. I've seen a few horseraces, and never have I seen them urinating. This must occur prior to the television coverage of these events. It must be an extraordinary event, if it garnered enough attention at some point to make it into everyday common speak. Perhaps the animals pee with such force that it lifts the horse from the ground, possibly damaging the track that it will later run upon. I suppose though that if this were the case, then everyone would know exactly what "pissing like a racehorse" meant, as it would likely make the animal unsuitable for racing in any manner. But if ever there were a horserace and one of the horses was constantly pissing while participating in the race, I bet you'd hear the crowd exclaim a group "OOOOOOH. Oh, so that what that means. Ok. I get it now."
Ok, I suppose that is enough of this.