to show off, to boast, to splurge, to spend lavishly
Arrête de flamber avant de tout perdre !
Stop showing off before you lose everything!
— Election 1 (2005)
Tu viens flamber avec moi ?
Wanna come blow some cash with me?
— La Haine (1995)
Arrête de flamber !
Stop showing off!
Flamber ?
To flambé?
— Moscou ne croit pas aux larmes (1980)
On va le flamber !
We're going to set it on fire!
— Interstellar (2014)