«زَي قِرَايْةِ الْيَهُودْ تِلْتِينْهَا كِدْبْ»

The proverb accuses someone of being mostly dishonest: whatever they say, the greater share is fabricated. It is aimed at a habitual liar whose statements cannot be trusted; the fraction 'two-thirds' is a rhetorical exaggeration meaning 'most of it,' stressing that falsehood outweighs truth.

Its force comes from a comparison that slanders Jews, claiming their reading or recitation is largely false. It is a prejudiced expression, not a harmless quip: the insult depends on an ethnic and religious stereotype built into the image, which is recorded here, not endorsed.

Aimed at a person whose talk is judged to be largely untrue, often dismissively. Because it insults Jews as a religious group, it belongs only in discussion or documentation of the proverb, not in everyday use as a casual put-down.