IdiomThe AbsurdFrench

Quand les poules auront des dents

Meaning: Never — it describes something that will simply never happen.

Literally: When hens have teeth

Example: “Lui, ranger sa chambre ? Quand les poules auront des dents !” — Him, clean his room? When pigs fly!

English equivalent: When pigs fly

Origin: Hens have no teeth, so the day they grow some will never come. The Académie française listed the phrase in its 1932 dictionary as meaning "when what cannot happen happens," but its first use is not documented, and the claim that it dates from the 18th century could not be confirmed. English uses flying pigs for the same impossibility.

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