speak with a plum in (one's) mouth(redirected from speak with a plum in mouth)
speak with a plum in (one's) mouth
To speak in a manner that is indicative of a high social class. Primarily heard in UK. He spoke with such a plum in his mouth that none of us working-class sods could stand to listen to him.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.