This one's easy. I was talking to the pretty lady next to me instead of watching what I was doing. We were parked behind a car waiting for the light to turn from red to green. The light turned. The car ahead of me started, then stopped. I started and didn't stop. I rammed him in the back. It was totally my fault, but when we got out to see the damage, the only damage was to my car. The guys in front were former students of mine, and they had obviously been drinking. They didn't want me to call the cops, so I didn't. I handled this all wrong, I know, and I really liked the pretty lady.