Joke: Laura fell for her handsome new dentist like a ton of bricks. Soon she had lured him into a series of passionate rendezvous in the dental clinic after hours. Then one day he said sadly, "Laura, honey, we have to stop seeing each other. Your husband's bound to get suspicious." "No way, sweetie, he's dumb as a post," she assured him. "Besides, we've been meeting here for six months now and he doesn't suspect a thing." "True," agreed the dentist, "but you're down to one tooth!"