Some stupid retard that always slows down in the middle of the road just to watch some guy get arrested in the ditch! The type of guy to stare at someone taking pills and getting mad when asked to stop.
Slang: Someone who enjoys the act of slowing their vehicle to like 15 miles an hour on a motorway just so they can gawk at the wreckage of a van on its roof or a car on fire.
These people are a severe pain in the arse to emergency services, and they often cause tailbacks up to several miles.
Idiots who slow down to gawk or stare at minor traffic accidents, pulled over drivers, or people with car trouble on the highway or roads. Rubbernecking causes traffic jams and more accidents due to drivers distracting themselves from the road.