Is it normal to hate people who do thinks to be cool

People who jump on the bandwagon or just do things to be cool annoy me. Whenever the saints were going to win the super bowl, they were everyones favorite team. I hated them then. And then there's people who make excuses for doing dumb things saying "everyone else is doing it." have you ever heard someone say "if they jumped off a bridge would you do that too?" I think I know some people that would. Right bow at my school there's a guy whi people think is "cool." he uses sone phrases that you don't year everyday, and now half my class uses them. Someone will get into a tv show, and they thinkbyoure a loser if you don't watch it, so of course, everyone does except me. It's so annoying!