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'Good Yok' is a pharse spoken in the christchurch, New Zealand.

The phrase is spoken as a sarcastic retort to something a person might find laughable or untrue. 'good Yok' essentially means 'good joke'

It is not established whether 'Yok' is usable as a standalone word, some argue that there are no 'Yoks', only 'good Yoks'.

An alternative spelling of Yok can be Jok.
Person 1: "Are you going to kate's party?"
Person 2: "Good Yok!"

Person 1: "Did you do well in the test?"
Person 2: "Yea, Good Yok"
by fustguy June 25, 2014