What is Dief?
1.
To point at one's face to emphasize that you do not care. To point to an emotionless face and say "Do you see any concern on my face?" In other words "I DON'T CARE!"
"I really don't think he gives a shit. He just gave me the Dief point."
See
2.
Die In an Electrical Fire
I hate that fucker... wish he'd dief.