
Not worth the paper it’s written/printed on
Lack of Credibility
Used to express that a document or statement is not trustworthy or reliable.

Their guarantee turned out to be not worth the paper it's printed on.
Hyperbolic Expression
It's an exaggerated way of saying something is completely useless or ineffective.

His vows of loyalty were not worth the paper they were written on.
Legal Disputes
Often invoked when formal agreements or contracts fail to hold up in practice or law.

The non-compete clause is not worth the paper it's printed on.
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