it means to be away from your keyboard and or computer like i think he's afk.
In text messaging, "NK" typically stands for "no kidding."
No comment!
Cf
LAO
"Uff" is a term commonly used in text messaging to express frustration, annoyance, or exasperation.
will call back
Oh boy
good to see you
It means hate
Tons of Yorkies.
Cry out loud
"I love you"