Here's an example of my borderline rules-lawyering:
Last night, we were fighting a couple of (I believe) spectres. The cleric had just turned them; I had cast produce flame on the previous round. It was my action
The only way for me to move close enough to attack them was to move
through the square that one of them occupied, incurring an AoO from that one. (All the squares on my side of the spectre were occupied by my allies; the only empty square was on the other side of the spectre; and I didn't have enough movement to circle around it.
But I as a player knew that the spectres would be cowering and could therefore take no actions: it wouldn't be able to take an AoO on me.
Given that, I asked my DM if I could tell that they were getting ready to run away in a panic. One excellent sense motive check later, and I described myself spinning past the spectre and slamming my fire-coated fist into its face.
When the spectre's action came up, it ran away by sinking straight into the earth. Technically, I think I should have gotten an AoO on it (since it has to flee as fast as possible, it doesn't get to do a strategic retreat from combat), but when the DM denied me an AoO, I didn't pursue it.
So that's my rules-lawyering tendencies. I as a player took advantage of a foible of turning that my character might not know about. I described my taking-advantage in cinematic terms. And I started to argue with my DM about an AoO, but then bit my lip on it and shut up.
Chaotic or lawful!
Daniel