péter plus haut que son cul

Literally, “to fart higher than one's ass”.

• IPA^(key): /pe.te ply o k(ə) sɔ̃ ky/

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péter plus haut que son cul

1. (figuratively, vulgar, derogatory) to think one's shit doesn't stink, to think the sun shines out of one's arse, to think one is the shit, to think one is the business, to think one is hot shit (to be full of oneself)

   Synonyms: ne pas se prendre pour de la merde, se croire sorti de la cuisse de Jupiter, se croire le premier moutardier du pape

• haut sur cravate
• avoir un balai dans le cul