I think it's a reference to the bloodninja chats ( http://www.bloodninja.org/ ) ... I don't know the whole story, but I first heard of it from someone who played EQ ... yes, that EQ.
Yuugi, you disappoint me. I never thought you could be capable of such a deplorable act. I mean, hitting Parsee! HITTING PARSEE! And you are not even doing a quality raping! You're just doing the whole 'Robe and Wizard hat' bullshit! Aaaaargh!