A friend of mine had this problem once. He would close all the blinds the minute he walked in my house and he kept checking through the peep hole in my front door. He swore that my neighbors' car down the street had been following him for weeks and that spy helicopters were always flying over his house. He even told me that one time he came home and suspected that "they" were in his house so he went around the back, and before he jumped the fence he realized that "they" were staked out in his back yard with automatic weapons. At that point, he raced around the front, busted in the front door and quickly flushed all his Crack down the toilet... Get it?