slang A variant of "Mutt and Jeff," rhyming slang for "deaf." Primarily heard in UK. Can you please speak louder? I've gone a bit mutton Jeff as I've gotten older. Poor Grandad's quite mutton Jeff these days, so he's always got the radio blaring as loud as it'll go.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.