"Bạn thật là bẩn tính!"

Translation: You are really mean!

[GrahamRawlinson]

Yes, the word order suggests you really are mean. That is not the same meaning as you are really mean! Word order sometimes is very significant in English!

[CeeCeeSong]

i agree, but it's close enough in meaning that they should accept both answers. If they're only going to accept one, I think it should be that "You really are mean." But that gets marked wrong. :-(

[krikori]

With the current word order, doesn't it stress more on the verb? You really are mean! If not, how would you say that?

[JCMcGee]

The word la usually suggests that the next word will be a noun?
So...maybe: "You are a real meanie!"

[mark555520]

You really are mean should also be accepted duolingo sucks