This is usually seen and performed while driving past the scene of an accident, or any other incident where there are police, firemen or ambulances with lots of flashing lights.
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.
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.