So you find a dead deer by the side of the road. "Mmmm, them's good eatin's," you say to yourself, so you load it into your trunk. Then the cops hear about it and come to get the deer out. But that deer wants out on his own.
In a scene that's basically straight out of the greatest auto parts-related film of all time, Tommy Boy, the trunk opens and the deer decides he isn't dead yet. It's probably the most terrifying road kill-related moment these cops have ever had.
(Hat Tip to $kaycog!)