(as) rare as hens' teeth

(as) rare as hens' teeth

Incredibly scarce or rare; extremely difficult or impossible to find. Support for the president is as rare as hens' teeth in this part of the country. Please, who would I even ask to the prom? A high school boy who isn't a doofus is as rare as hens' teeth. Passionate love like you find in a poem has always seemed rare as hens' teeth in my experience.
See also: rare, teeth
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

rare as hen's teeth

or

scarce as hen's teeth

OLD-FASHIONED
If something is as rare as hen's teeth or as scarce as hen's teeth, it is extremely rare. Record companies are becoming as rare as hen's teeth. Note: Hens do not have teeth.
See also: rare, teeth
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

rare (or scarce) as hen's teeth

extremely rare.
As hens do not possess teeth, the implication is that something is rare to the point of non-existence. The phrase was originally a US colloquialism, dating from the mid 19th century.
See also: rare, teeth
Farlex Partner Idioms Dictionary © Farlex 2017

(as) rare/scarce as hen’s ˈteeth

(old-fashioned) extremely rare: Critics always complain that good movies that the whole family can see together are as scarce as hen’s teeth.
This refers to the fact that hens do not have teeth.
See also: rare, scarce, teeth
Farlex Partner Idioms Dictionary © Farlex 2017
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