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Beware the dreaded bacronym ("A Person of Little Or No Knowledge"). Acronymic etymologies, especially for slang terms, are almost invariably wrong. Whether it is now considered an acronym or not is irrelevant — the etymology can only be one thing (shortened from "plonker") or the other (a bacronym) or maybe something else, but not more than one thing, unless the etymology is unknown or obscure, in which case it is legitimate to give more than one theory.
Furthermore, there is no good reason to embolden the initials — we know what an acronym is — and they should not be capitalised. — Paul G 09:38, 24 September 2008 (UTC)