Hold Your Horses

An employee once told me that I needed to hold my horses.  I told him that as I do not own any horses, I was unable to hold them, but that was neither here nor there as he was already three days late in delivering to me his report on whether or not the popularity and consumption of Swiss Cheese is affected by changes in the environment including, but not limited to, acid rain levels.  Absolutely NOTHING to do with horses.  Cows, perhaps, but definitely not horses.  Unless, of course, he drank horse milk.  But that's just weird.