not worth the paper it is written on

not worth the paper it's printed on

Useless; unimportant; insignificant. Oh, that memo is not worth the paper it's printed on. You know the boss is going to completely change her mind about it in a few days anyway! Due to the recent hyperinflation, the nation's currency is now not worth the paper it's printed on.
See also: not, on, paper, print, worth

not worth the paper it's written on

Useless; unimportant; insignificant. Oh, that memo is not worth the paper it's written on. You know the boss is going to completely change her mind about it in a few days anyway! Due to the recent hyperinflation, the nation's currency is now not worth the paper it's written on.
See also: not, on, paper, worth, written

not worth the paper it is written on

(of an agreement, promise, etc.) of no value or validity whatsoever.
See also: not, on, paper, worth, written