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Irish waterfall

(slang) French inhale; inhaling smoke that has just been expelled from the mouth or inhaling smoke through the nose while simultaneously expelling it from the mouth.

ˈaɪɹɪʃ ˈwɔtɚˌfɔl263 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 27, 2026

(slang) French inhale; inhaling smoke that has just been expelled from the mouth or inhaling smoke through the nose while simultaneously expelling it from the mouth.

Origin: From the stereotype of the Irish as stupid, and the fact that smoke rises, unlike a proper waterfall. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
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