I Always Get Asked Why Im So Quiet

My teacher asked me this in front of the whole class just before Xmas break. I was so mad and I overreacted and muttered shut up under my breath.

But she was being mean. Anyway she wasn't happy. Gave me an assignment and told my father. So I got in pretty big trouble.

But Imo it was her fault and yeah I shouldn't have overreacted but still.