If you had a bright enough laser (nice powerful greenie on a dark night) you'd probably freak the guy out.
I mean, a lot of people think hand held lasers are like those in the movies, so if he sees a powerful beam of green light at his feet, he'd probably scram!
I mean, a lot of people think hand held lasers are like those in the movies, so if he sees a powerful beam of green light at his feet, he'd probably scram!