Bob was eating pizza at an outdoor cafe when someone walking by grabbed a slice and ate it right in front of Bob's face, making Bob a victim of yum yum chow chow.
A meal made by a poor person, when there's no real "meal" food in the house you find whatever you can and mix it into one thing. (Usually yields large servings, very unhealthy).
Guy1: "Man I got the munchies, but there's no food in the house"
Guy2: "me too, let's go scrounge the cabinets and make some mad ghetto chow chow"