How's your father

[beso]

What is the meaning and origin of the expression of something being "a bit how's your father"?

[Quizmonster]

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[firewalkwithme]

It seems to be taken from the British slang phrase "a bit OF how's your father", referring to having sexual intercourse. If something IS "a bit how's your father", at least in Australian parlance, it's used to intimate that something is, ahem, "intercoursed", if you take my meaning, or at the very least that something is suspicious or strange.