revenge of the laser pointer

i think it would be pretty funny if someone from mon night class showed up with a laser pointer and while our video gaming teacher was lecturing with his laser pointer they could mess with him....cuz as I figure it ...everytime he is pointing he is also looking at the screen to see where to point...so it's the perfect evil plan because he can't see you doing it. Of course I would never do anything like that to a teacher but I did go low enough to shine one in my evil neighbors house at night to try and scare them out of the neighborhood- it never worked but it was entertaining for me. my neighbor ripped me off by never finishing some work I paid him for so I had to retaliate some how.