Na'Say'en - A loud and profane way of checking if someone's paying atten

A loud and profane way of checking if someone's paying attention. It's like a verbal slap in the face.

Na'Say'en, I'm not even talking to you anymore.

Na'Say'en, I just got a ticket for talking to my dog.

Na'Say'en, I’m going to punch you if you don’t get it.