The president of a big powerful union was at a conference in Las Vegas. He inquired with the concierge at his posh hotel about a local whorehouse. He was given directions to the nearest one.
When he arrived at the place, the madam paraded all of the ladies in front of him. All of them were very pretty and fairly young. He selected one of them. As he and his escort were making their way down the hall, a voice rang out. Wait. Hold on! Come back.
He and his escort returned to the front area. A old toothless women was standing there. The madam told him that he would have to take the old women. He inquired as to why. "Sally has been here the longest so she has seniority".