Yeah, you really should see the movie, it's actually pretty dang good. The reason he needs the glasses is because in the movie, aliens live among us, and control literally everything we see. They seem to look like us, but only because they send out a signal that makes people see what the aliens want, and the glasses allow them to see through it. It sounds weird, but it's strangely accurate in a way to our current real life situations. Anyways, there's a quick plot for you, but I suck at describing things, so just go see it if your curious. About kneeing the guy in the nads five times, I guess you got to do what you got to do when it comes to winning the fight, and not getting the crap kicked out of you instead. You better believe I'll knee nuts, pull hair, and stomp toes in a fight if it will give me the edge and keep me from getting my face beat in.