Negative question

I'm going to football practice. Don't you fail in your last test!
Note that "testes" has an entirely different meaning in English.

AnonymousI am going to practice football,but don't you fail in our last testes.

What is the connection between you practising football and the other person failing a test?

teechrDon't you fail in your last test!

It seems to be a question, but why did you use an exclamation mark, please?

KhoshtipManIt seems to be a question, but so why did you use an exclamation mark, please?

That's not how it reads to me. I parse it as an emphatic imperative.
e.g.,
Don't fail your test.
Don't you fail your test, boy! [emphatic]

Yes, that's right. I don't know how I couldn't get it at the first read.

Anonymous am going to practice football,but don't you fail in our last testes.

AnonymousSeriously?

Seriously.

Remember that awful "little quizzie" (as he put it) that the science teacher gave? It was so difficult that one exasperated student exclaimed, "If that was one of his little quizzies, I certainly don't want to see one of his little testies".

CJ