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on one's jack jones
01
(Cockney rhyming slang) by oneself, without company
Slang
What does "on one's Jack Jones" mean in Cockney rhyming slang?
The structure uses the rhyming pair "Jack Jones" (the singer's name) to stand for "alone," following the typical Cockney pattern, often in the phrase "on your Jack Jones." It is used in Cockney rhyming slang (London, UK) to mean by oneself, without company, often shortened to just "on your Jack." People typically say "I went to the pub on my Jack" or "He's sitting over there on his Jack Jones." The term originated in mid 20th century London rhyming slang, drawing on American singer Jack Jones, and remains a classic, widely recognized example.
Examples
He went to the cinema on his Jack Jones.
