While looking out a friend's apartment window, I noticed a fellow one block away (there was a low building in between) looking through binoculars at my friend's building. I mentioned it to my friend, who explained that this guy had been doing it for weeks and people were fairly certain they had seen the guy masturbating while watching - classic urban peeping Tom stuff.
My friend had a sideline as an artist, and had currently been into war as a topic. He had somehow managed to score some old rifle stocks, and there were a few in the corner awaiting painting and so forth.
I had a laser pointer in my bag, which I laid into the groove of the stock where the barrel normally would lie. Taking this to my shoulder, I turned the laser pointer on and centered the dot on the peeping Tom's forehead. His binoculars swung over to me and he took a second to focus ... and realized that what appeared to be a rifle with a laser scope was aimed dead-center on his face. He dropped the binoculars and yanked his curtains shut.
Nobody ever saw his peeping again.
