I was sitting in stand-still traffic on the interstate one day. Accident ahead closed the road. Up from behind comes a jerk on a motorcycle, right between the two stopped lanes of traffic. Just ahead of me, someone opened their car door, planning to get out - quite a few people had done that already. The motorcyclist took off the driver's door, totaled his bike, and himself.
Thanks, pinhead, now we got two accidents blocking traffic.