There's this big guy (like, 400 pounds kind of big!) at my hangout who thinks he knows everything about Games Workshop. I only played with him once, but once is enough.
Once, I played him with my dark eldar, he was all like, "okay, let's see how fast I can beat you. I have to have my hourly snack in the next 5 minutes." During the game, he rarely told me what he was doing with his tyranids. (if I asked him, his usual response was "Don't make me repeat myself or I'll suffocate you with my fat!!") and he kept putting all of these rules that only he knows into the game. (oh, look, my tyranids are on a little one millimeter hill, that means that your Scourges get no cover save!) I was just glad the game was over.
and what's worse is he has it in for Tau, and so, everytime he sees a Tau army play, he helps the other guy any way he can, usually with nonexistant made-up rules (hey, did you know Orks always hit any tau on a 2 plus?)....