When someone gets you angry, you need to come up with a good insult quickly. Of course, that doesn't mean that you actually need to think of your own. You should feel free to steal some insults from your favorite movies.
This video, from Watch Mojo, references movies like Ghostbusters, Anchorman, and Billy Madison. It doesn't matter if you're a fan of those films or if you've never seen them before, because either way, you can appreciate these clever insults:
It's time to memorize them, so you can use them one day! What's the best insult you've ever heard a celebrity say in a movie?