BGA,
All the Sqn wives were chatting about the nicknames that their husbands were called. Mrs "Sylvia" comes out with "all the boys call **** The Dark Shadow!" As they know him, the wives think this a little unlikely, so they go home and ask if he is indeed called the Dark Shadow, and, unsurprisingly, it's the first the blokes have heard of it! Apparently he had a badge with The Dark Shadow on it, and he used to put it on on his way home, and take it off again as he came in to work again.
Nice guy, nice and ....
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PCD