At one point, I saw a video on youtube where somebody set their gamer tag on xboxlive to the phrase "Xboxturnoff", and then went around griefing players in games like Halo, where voice chat is active.
The end result was that the player would do something obnoxious, and somebody would ask them to stop, but of course this necessitates saying their gamer tag. So you'd get audio clips of people saying stuff like "Oh my god, xboxturnoff is so freaking - WAIT NO CANCEL CANCEL XBOX TURN ON".
