An old lady and an old man are sitting in their bed, when the old man says, "Lets have sex." "Oh we're too old." says the old lady. "No no, we are not." "Well, okay, just this one last time." So the old man pops on a condom. "You know you don't need one of those. We're too old to have babys." "I know," says the old man, "but I love the smell of burning rubber!"