Just happened. A guy in a dodge ram was in my turning lane in the parking lot. I had to drive around him and I waved my right arm in disgust. Of course I see the guy do a 360 turn and I park. I get out, he gets out and i tell him what the **** was he doing? He was in the left lane. We start walking towards each other and he tells me why do I have to do this all the time? I never saw the guy in my life. I then look and he had a black 6 inch blade in his hand. I was stunned and asked him why he had a knife. I then took a step back, pulled out my cell and pretended to call 911 and read his plate. he got back in his truck and sped away, without his lights on. I did have 2 bluemoons before i went and didn't want to chance anything by really calling. It was just an odd experience. The guy was probably 5-10 older.