Three pages on this so far and I'm the first to enter a correct definition.
Chicken-Shit or
Chickenshit: Slang.
1. Adj.; Used to describe a type of action in which a person or otherwise inclined entity attempts to
belittle, assault, injure, or harass another individual or group of individuals while hiding his true identity or location or by otherwise making himself/herself
unavailable immediately after the initial action.
2. Noun.; Along the same lines following the scenario (1)described below, it would not be uncommon for people to refer to Steve as "Chickenshit".