How's your father

Posted by Jim on November 30, 1999

In Reply to: How's your father posted by Ben Brick on November 24, 1999

: Can anyone tell me where the phrase 'A bit of how's your father' came from as a euphemism for sex?

My old grandmother used to say "Too much 'how's your father' and you won't know who's the father". So maybe a play on words?