Snipped from Wolfery, so.
Slow-Hours tells the only bad joke she can ever remember. "A horse walks into a bar and asks the bartender for a shot and a beer. The bartender hesitates, shakes his head, but gets the horse his drinks. Before handing them over, he says, "Listen, man, you are in here every night getting smashed, and I am really starting to worry about you. Do you think you might be an alcoholic?" To which the horse responds, "I do not think I am" and disappears with a poof!"
She hesitates for a moment, looking abashed, then adds hastily, "You see, because he did not think he was and "I think therefore I am" and...oh, nevermind."
She sighs, adds finally, "I would have explained it first, but I did not want to put Descartes before the horse."
