A clan of World of Warcraft players are really, really into role-playing as pirates. They hang around, talking like pirates and attacking other players (PvPing -- player vs. player). This attracted one of the Warcraft game-monitors who came by to tell them off, but rather than act chastened, they stayed in character and yarred and ho-harred and so forthed the monitor. The transcript of the event is unbelievably funny. Link (Thanks, Stanley!)
Update: Josh sez, "I'm a member of the same group and as a whole they aren't that pirate-ey, I just caused this person 'maj' to start doing it as well as a few others, and he's gone off on a tangent from there. "