WTF is that?
I'm actually interested in the odd underworld sex in gaming, although apart from the terrible Custer's revenge rape game and a text based game about swingers and a hot tub called soft core adventure or something (it was a precursor to Leisure Suit Larry) I didnt think there was much of it on the Atari.
Gaming wouldnt begin to become something for adults until the Amiga era, at least that's when Duke Nukem brought it with the strippers and games like Lula, which actually featured a plot about hardcore pornography, came out and were properly 18 rated.
A lot of the games before that were humour based and sort of played upon the idea of desperate teenage boys being the gaming population or target audience. That occasionally makes a come back now and again, Seven Sins on the PS1 for instance.