In English, it is literally means " Fuck your self" .In Arabic, it is used as an idiom meaning " Do what you want !", " Go to hell !" or " Do it alone away from me".
Neek nafsk, I can not help you any more.

Neek nafsk, It is so risky task.

= I feel desire to start smoking.
-Neek nafsk!
by Mahmoud Tolba April 23, 2020
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