live stalking 

When a player on XBox live joins in on other players' games over and oever again to try to plow through the player. typically happens when this player has lost to the other player so, they feel they must exact some revenge on them.

Player 1: "Hey look, its a DBW on the other team. He must be live stalking us again.

live stalking by Sideboob<cleavage September 4, 2010