def1. The act of cock blocking, or stopping a player from getting laid.
def2 The act of stopping of butting into a players conversation with a woman in such a was as to sink the conversation preventing the player from getting laid.
def3 The act of player hating in general.
def4 Intentionaly disrupting a players moves, for what ever reason whatsover.
example 2. My attempt to hook up with Janet was stahled by David.