One of the most beloved urban legends of all time is "The Hook."
We Americans love our urban legends. This classic old-time one goes like this; a couple on lover's lane listening to music and making out, hear an announcer come on to warn that a serial killer has just escaped from a nearby institution.
Supposedly, the killer has a hook for a hand. The upset lovers decide to leave when they start hearing creepy sounds. When they arrive home, they find the hook caught in the car door handle. Many variations have been done of this theme, but it seemed to serve as a cautionary tale for young adults and the dangers in the world, especially when you're not focused on your environment.