I really wish I could help, gecko, but I'm nearly 60. (can't be true!) and I just can't.
I was brought up in a working-class suburb, worked as a nurse, sang in pubs and classy restaurants, rode the Greyhound for a couple of months in America. Been in a lot of "powder rooms" "Dunnyies" and the like and got involved in lots of conversations with friends and strangers. Willies have come up, if you'll excuse the pun, at times, but I don't recall any particular names we used. Womens' private conversations can be as colourful and creative as those among men, I think, but they just doesn't seem to go in the same direction. This runs to the singing of bawdy songs as well. That's much more apparent among males.
Wish I could help. Sorry. Cheers, Joy