motor-mouth

[moh-ter-mouth]

noun

Slang.

plural

motor-mouths 

1. a person who is a constant or irrepressible talker.

Example Sentences

“Silent Cal,” as he was known, is quite a contrast to our current motor-mouth in the Oval.

Read more on The Wall Street Journal

Wahlberg is in the familiar rapid-fire, rat-a-tat style he has developed over the years, tussling and bantering with everyone around him, and not even his encroaching disability can slow his motor-mouth.

Read more on Los Angeles Times

Eldritch’s three stigmata include artificial eyes, a metallic hand, and steel teeth that, for literary scholar Marcus Boon anyway, suggest the motor-mouth jaws of speed freaks.

Read more on Salon

She delivers stretches of her story in a voice-over that suggests that Mr. Sorkin wrote and directed his movie with a stopwatch in one hand and a DVD of Howard Hawks’s motor-mouth comedy “His Girl Friday” in the other.

Read more on New York Times

As Genie, Murphy goes all out as the showboating, plus-size imp whose motor-mouth riffs are variations on Robin Williams’ hyperactive voicing of Genie on film.

Read more on Seattle Times