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I need a bit more context to understand the sentence fully. ...belay (stop) that fiddle faddle (nonsense) and jog the Loo!
To "jog" is to "push or nudge something gently", and the only "loo" I know of is the English slang for "toilet". It is possible that "loo" has another, nautical definition, but I'm a sailor and I've never heard of it, unless it is to do with the word "leeward" which is pronounced loo-ard.
Moggy
jog the loo 
Linear Mode
