Roadkill is an animal or animals that have been struck and killed by motor vehicles. In the United States of America, removal and disposal of animals struck by motor vehicles is usually the responsibility of the state's state trooper association or department of transportation. Some people crazily love to eat Roadkill. Typically, these people are Rednecks.
Roadkill is also what you get called when we pwn you, or when you blatantly choose to disobey rules.