shoot off one's mouth

Speak indiscreetly; also, brag or boast. For example, Now don't go shooting off your mouth about it; it's supposed to be a surprise, or Terry is always shooting off his mouth about how many languages he speaks. [Slang; mid-1800s]

Common Names:

Name	Pronounced	Usage
Fitzgerald	[fits'dʒerəld]
Dayo	-	Western African, Yoruba
Thorborg	-	Swedish
Palmer	PAHL-mər, PAH-mər	English
Peregrine	PER-ə-grin, PER-ə-green	English (Rare)
Gaioz	-	Georgian