In think some of the porkies, are said to us to just add flavour to the punt. A couple that I recall were....
"My husband doesn't know in do this, he thinks I go out modelling lengerie every day" I took it with a pinch of salt and chuckled.
The best one I've heard was....
"My boyfriend doesn't know what I really do, I tell him I go cleaning big houses"
That one had me genuinely laughing, all from an ex and now returned to parlour girl
Did I believe a word of it.... no
Did I laugh along and take it with a pinch of salt... ofcourse I did