A coward. Someone who can't fight and resorts to foul tactics, like spitting in food, to compensate for their wimpiness. They may also start gossip or rumors about a person they can't go near because they will get their butt kicked.
Dang! Tim got mad and chased Marco all the way back to his house. Later on, Marco urinated in his beer when he wasn't looking and also started a rumor that he won't go around him because he is gay. A classic emminger!