Why do my friends call me vain just because I hate being wrong?

So we were watching a movie that we’ve seen so twice times. When my best friend said, “See I told you that way going to happen! I TOLD YOU! You didn’t believe me.”
I was like, “I know. I’ve seen it before. You don’t need to tell me I told you.”

She didn’t respond. I keep talking to and my other friend paused the movie and snapped, “Will you be quiet? We’re trying to watch the movie. Shut and let it go! Rude!”

The other girl said, “You just don’t like being a wrong. Zip it or beat it.

Why do my friends call me vain just because I hate being wrong?
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