Rolling coal is the practice of tampering with a vehicle's emissions control system, causing it to spew black clouds of sooty exhaust.
  • PersnickityPenguin
    8·
    1 year ago

    It’s also a practice to used to attack other drivers, pedestrians, cyclists, motorcyclist etc by blowing black soot in your face. Its often dangerous because it creates a smoke screen where you can’t even see the road.