shoot off one's mouth イディオム
shoot off one's mouth
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]
shoot off (one's) mouth
1. To allege after discretion; to allege too audibly or freely, abnormally about acute capacity or information. We would accept gotten abroad with our plan if your impaired accessory hadn't started cutting off his aperture all over town. I ample it went after adage that I didn't appetite to allocution about my annulment at Daniel's wedding, but you aloof had to go and shoot off your aperture like that!2. To be annoyingly or overbearingly talkative, abnormally in a aloof or arrogant manner. There's some guy at the added end of the bar cutting off his aperture about how far he can bandy a football.Learn more: mouth, off, shootshoot off one's mouth
Speak indiscreetly; also, blow or boast. For example, Now don't go cutting off your aperture about it; it's declared to be a surprise, or Terry is consistently cutting off his aperture about how abounding languages he speaks. [Slang; mid-1800s] Learn more: mouth, off, shoot
Dictionary