[Nyororin]

For some reason, I am thinking that it is imitating some comedy sketch. I can`t remember what, but I am thinking it isn`t so much mocking you, but the way the teacher has said that you can speak Japanese. To the kids, chances are they really don`t think that much about it to actually mock. But if a teacher says the same thing as some comedian... Well, excellent opportunity to make a joke.

I wouldn`t hesitate, however, to point out that it isn`t a kind remark and can be considered mocking.