Murray,

The term "bint" in English well predates WW2, coming back with British troops from India.

Dicho, Grose's Dictionary of the Vulgar Tongue? A great book (I just wish I could find my copy)

JennieG,

I don't know what today's term for an enthusiastic amateur in the matress stakes (except, perhaps "slapper" which is considered insulting), but at one point it seems that "Whores" were the amateurs (the professionals being "harlots"), (see "Moll Flanders", where she describes herself as wife to one brother and whore to the other).

Regards

Walrus