We know all the words and are still seeing its relevance today, over ten years later.
But the movie obviously could have gone in many different directions, and there's nothing more interesting than to see a deleted scene so long after the movie's release.
Refinery29 discovered this new clip, which shows Damien tinkering with a cafeteria table in hopes to spill drinks all over Regina.
However it all goes terribly wrong, when Karen sits down instead and gets nailed with a bunch of different milkshakes and sodas. Poor Karen.
Watch below, and see how Cady really did turn into a mean girl: