Question

گردنت بشکنه

Answer 1

Hi

May you break your neck.

Comments

Its the best answer thanks

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Hi,

A reference that carry the intended meaning is desired.

thanks.

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Hello

This is just a negative/aggressive prayer against another person.

It is not an idiom. It means what it means. No reference is needed. 

For negative/aggressive prayer, look at this:

http://goo.gl/jGZUDM