Someone with a protruding mandible, full of grotesquely crooked teeth. Usually the lips are not large enough to hide, e.g. resembling a cowstopper on the front of a train.
Did you see the cowstopper on that fool? I'm gonna gopush him over to the train tracks.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.