A friend's outstanding Halloween costume has sidetracked me into a three-week Karate Kid nostalgia loop. Why were the Cobra Kai kids so evil and how did they all end up at the same highschool? How did the sociopath sensei guy get a gig instructing impressionable minors? Why was there a proxy gang battle being fought between two damaged old war vets by their high school aged students? Why did Johnny suddenly transform from hardass-to-wuss after taking that crane kick to the face? Why was Pat Morita not in more movies when he was such an obvious badass? I don't know any of the answers here except that taken all together you get a stellar all-valley karate tournament montage and a bad-as-hell Halloween costume idea.