In Turkish, if you want to call the person you are talking to (i.e. ´you´ ) a liar do you need to mark the person grammatically?

                               Yalancı!

                               Yalancısın!

Strangely enough, it is not clear to me.

You don´t  have to mark the person in spoken language especially. Especially when you are furious with the person with whom you want to call "liar ! "  

It´s same as with some other words such as " tembel ! " , " pis ! " , "aptal ! ", " gerizekalı ! "

As in example dialog below :

A) İnan bana. Böyle olmasını istemedim.

B) Yalancı ! Artık senin söylediğin hiç bir şeye inanmıyorum.

A) Believe me, I never wanted this happen like this.

B) Liar ! I don´t believe anything you say anymore.