One day, four workmen were bragging about the tricks that their dogs could do.
The first man to speak, a Machinist, told the other workmen how his dog, Measure, could accurately measure anything. The four workmen had their dogs with them and sure enough the Machinist's dog, Measure, measured out a cup of milk, a cup of sugar, two cups of flour, and a half a teaspoon of salt.
The other three workmen agreed that this was a remarkable trick, but one of the other workmen, a Cook, claimed that his dog, Chef, could cook almost as good as himself. Sure enough, Chef added butter, baking powder and chocolate chips to Measure's ingredients and came up with chocolate chip cookies. Again, everyone agreed what a wonderful talent this was for a dog to have.
But, then the third workman, a Building Contractor, said his dog, Slide Rule, could draw up blueprints. He then gave his dog a pencil, paper, and ruler, and sure enough, Slide Rule drew up the plans for his Dream Dog House. Needless to say, everone was impressed.
Then the fourth workman cleared his throat. "Well," the other three workmen asked the fourth, "What can your dog do?"
The fourth workman, a Union man, replied, "Coffee Break, show them what you can do." The Union man's dog, Coffee Break, walked over, drank what was left of the milk, ate all of the cookies, shit on the Dream Dog House plans, screwed the other three dogs, hurt his back while doing so, put in a workman's Comp. claim, claimed unsafe work conditions on the claim form, and then Coffe Break took off on two weeks paid sick leave.