Quote from J.D. in My Bright Idea
J.D.: [beeping] Hello, Janitor hiding around the corner waiting to grab me. Janitor: How'd you know that was me? J.D.: I'm holding a GPS warning device that goes off whenever you come within 100 meters of me. It's responding to a sensor in your stomach. Janitor: I knew that wasn't a penny. J.D.: You'll never get near me.