A guy who drives a cab.
This guy often doesn't speak much English, but he may have been a brain surgeon in his home country (Ukrania, Cambodia, Eritrea, pick one) so give him a little respect, especially if he drives like a total bad ass.
It's rude not to tip the cabbie, unless he almost gets you killed or doesn't give you an honest fare.
The wad of money a cab driver gathers in any given shift. Usually comprised of smaller denominations.
That veteran Hack sure knows how to scoop up the Cabbie Cake. He can sure put the heat on the street and when he displays his Cabbie cake it is taken as a warning to others that this is his zone. He owns it in style as he hoists the Cabbie cake high in the air. An intimidating gesture clearly intended to strike uneasiness in others.