the.com/motormouth
A mouth with no clutch, no brakes, and a full tank of opinions.
means Someone who talks constantly and at high speed, often without pausing to let others get a word in.
from An American slang coinage from the 20th century, built the way English loves to build insults — by welding a machine to a body part. 'Motor' carries its engine sense of relentless, self-powered movement, and bolting it onto 'mouth' turns the talker into a vehicle that's running but never parking. It belongs to a small family of similar slang (think 'chatterbox,' 'blabbermouth') that imagines excessive talk as a mechanism stuck in gear.
- origin
- US slang, popularized mid-1960s
- root logic
- mouth running like an idle engine
- related term
- gift of the gab, but unwanted
- cure
- none known, interruption just refuels it