Ever been murdered in a dream? Freaked me out last night. [View All]

I was talking to a friend of mine, whom I have known almost all my life. He turned around and said something like, "this is what you need". He then produced a large revolver and put it up under my chin and at that point I woke up.

The only thing I can think of that would trigger this thought is an incident that happened 20 years ago with this guy. He had a real bad drinking problem back then. We had planned to go out to some clubs that evening and I stopped by his place to pick him up. The other people waited in the car and I went to his door to get him. I knocked and he said to come in. He was sitting in an easy chair with a loaded shotgun pointed at me and an empty 12 pack of beer scattered on the floor. He was trashed. I took the gun away from him, unloaded it and told him he was in no condition to leave his house. (I took the gun with me and threw it in the trunk of the car)

Would this trigger my dream last night? 20 years after the fact and I still think about it?