Incidentally, I don't recommend the Wikipedia article on CRS. Even the first sentence is misleading and/or wrong:

'Rhyming slang is a form of slang in which a word is replaced by another word or term that rhymes with it.

This is not true of much rhyming slang: if you accuse someone of telling 'porkies', you mean they are lying; few people actually spell out the 'pork
pies'. If someone is going to the bank to cash a cheque, he might say 'I'm going to the J. Arthur
[Rank] to sausage
[and mash] a goose's
[neck]' but he wouldn't say the rhyming word. People calling a hat a "titfer" often have no idea of the hidden rhyme ['tit for tat'].
Some rhyming slang pairs are spelt out - as in 'Would you Adam and Eve it', but if the speaker went on to say 'I couldn't Adam and Eve my minces' he'd be most unlikely to spell out the rhyme, 'mince
pies'. In fact, the plural marker even attaches to the word that
doesn't rhyme.
There are even fewer uses of rhyming slang where the rhyming word alone is used: 'tart' is one, used to refer to a woman with loose morals (Jam tart/sweetheart). Here the connection with the rhyming original is so remote that the meaning has changed (there's nothing intrinsically loose about the morals of a woman who might be addressed as 'sweetheart').
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