Holy crap, dude! Where I used to live, around the block, there was a man who dressed up in an alien costume at Halloween and left a bowl of candy out infront of his house. He hid in the bushes at the side of his house until someone took some candy. I took some and he followed me around the entire neighborhood. That was the first time I was out trick or treating alone (well, without my parents) with friends and I thought for sure he was trying to kidnap me. I just remember being scared shitless about it and standing at some stranger's front door with a bright light just staring across the street at him with my friends.