I've played a couple games, but I'm not in one now. It was a homebrew setting my GM came up with. We were playing D&D 3.5e.
My characters always operate on irony in some way. This particular session I was playing a Chaotic Neutral intimidate warblade who tends to run from combat. Further, he always runs from combat in the most awesome way possible.
There was one session where it was supposed to move away from combat and towards diplomacy. Guards burst into the party's room at an inn with shackles to take us away. My character, Myrek, was sleeping near the window. He jumped out (natural 20'd the jump check) and was surrounded by two guards with polearms on either end of the alley outside. He made a tumble and then an Insightful Strike check for nonlethal damage (also both natural 20's, it was unreal). Since Insightful Strike can basically punch through steel, we'd been calling it "Fist of Norris", and it was my signature move.
But the fact of the matter is I natural 20'd three times in a row. The GM told it like this:
"Okay, you dive out of the window, do three somersaults, and land on the first guard's polearm. Then you kick him in the face, he's sent flying backwards and crashes through the back door to the inn, unconscious. The other guard soils himself, drops his weapon, and runs away shouting 'It's a demon! Deeeeemon!'."
The entire party then followed me out the window, with the exception of our Evil cleric, who was in a separate room, and killed everyone who came after him, then casually walked outside. We all stole horses and rode off into the sunset.