A woman places an ad in the local newspaper "Looking for a man with three qualifications: won't beat me up, won't run away from me, and is great in bed." Two days later her doorbell rings "Hi, I'm Tim. I have no arms so I won't beat you and no legs so I won't run away." "What makes you think you are great in bed?" the woman retorts. Tim replies "I rang the doorbell didn't I?"