have a plum in (one's) mouth

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have a plum in (one's) mouth

To speak in a manner that is indicative of a high social class. Primarily heard in UK. Because he always sounds like he has a plum in his mouth, none of us working-class sods can stand to listen to him.
See also: have, mouth, plum
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have a plum in your mouth

have a rich-sounding voice or affected accent. British
See also: have, mouth, plum
Farlex Partner Idioms Dictionary © Farlex 2017
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