le frimeur

show-off, poser

f ʁ i . m œ ʁ
frime to show off, to brag + ur forms nouns denoting an agent, instrument, or quality
noun · masculine Rare #49,509
show-off, poser Colloquial.
FR: C'est un frimeur.
EN: He's a show-off.

Frimeur.

Show-off.

— Oppenheimer (2023)

Tu es un frimeur.

You're a show-off.

Petit frimeur.

Little show-off.

— Black Panther (2018)

Quel frimeur malgré sa sale gueule !

What a show-off despite his ugly mug!

— Porco Rosso (1992)