I suppose it's all about degrees, Sam.

It's certainly coarse - but on balance I would posit that 'your mum' is a broad trope/gag that is used to insult the original speaker and attempts to get under the skin of what is often a male's most important relationship.

It is even suggested here that it can find its roots in Shakespeare.

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I doubt, however, that the following, as an example of *your* work*, could be attributed to the Bard.

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Posted By: norway, Jul 20, 14:52:24