I remember once back in college we were playing Champions in the campus student union. I was running my regular group of 5 players, and had two new people show up that heard about the group. One of the new people seemed twitchy.
About a hour into the game, we were in combat and the twitchty guy was stunned for a phase by an attack. The guy started yelling saying there was no way he could be stunned. I showed I had a rolled 4 to hit and near max damage.
The guy did not say anything, so I assumed he was not going to agrue any more. I started running the combat again, when one of friends yelled "Look Out!!!". A swiss army (big one) flew past my head (missed by a foot), blade out, and stuck in the wall behind me. The twitchy guy and his friend were close to the door and bolted as fast as they could.
We did not call the police, since we only had their first names, and figured the only thing that would happen would that the RPG club would get banned from campus.
I never did see that guy again, but I did keep the knife.
Mike