You have tics

You suffer with the Tourette syndrome. And lord may save you when you're stressed because it's thrice worse when you're stressing. It's visible too. Which gets everyone to worry..seeing their boy classmate having some tics just because of a test or something.

So..now you were having a test, luckily with Shota, your teacher and he noticed those. So, he got up and took you out of class.

"Did you not study?" Shota asked you..he was serious.