Sparky:
No, I've never heard "couple few," "up the stairs," or "See how it'll sugar off." There are some strange regionl sayings over here too.
WireWrestler:
Masters of Cockney Rhyming Slang can hold a conversation which is impenetrable to outsiders, but again, it's quite a local thing to part of London. I'm certainly no authority on the subject. A few examples for those not acquainted with it:
apples & pears = stairs
dog & bone = phone
frog & toad = road
brown bread = dead
plates of meat = feet
mince pies = eyes
The "real" proponents of rhyming slang use just the first part of each phrase, e.g. "Is that a new whistle you've got?" (whistle & flute = suit) or "I'd love a nice cup of Rosie" (Rosie Lee = tea).
One or two phrases have become corrupted into general British slang, with many people not realizing the rhyming-slang origin, e.g. "titfer" as slang for a hat (from "tit for tat").
How about inventing some electrical rhyming slang? Maybe "win & lose" (fuse), chair & table (cable), or "jump & twitch" (switch).
(Also describes what you might do if you don't open the jump before touching the win or the chair!
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