Janner raised in a Manor
This phrase can be used to describe a 'janner' with a posher accent, sounding janner, but not quite with a little bit of posh essence is now called Janner raised in a manor.
"Oh, spot of tea?"
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"Mate, have you seen George? He sounds like a janner raised in a manor."
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"Mate, have you seen George? He sounds like a janner raised in a manor."