It touched my back...and some urban legends

Imagine if you will. You are driving home late at night and you stop for gas. After a quick chat you're back in the road, when suddenly you hear a sound from the back seat. You're alone, sweat begins to pour from your brow, you reach up and move your rear-view mirror to find. Skott, Shawn, and Tim in your back seat. Ahhhhhhhh! Thats right, lets talk urban legends. We have all heard of them and we have all been scared of them at one point in our lives. Whats your favorite Urban legend?