Profanity Adventures
Ant writes " Profanity Adventures is a nostalgic look at what used to happen when you tried typing swear words into 8-bit text adventure games. From the web site: "I typed in swear words into as many games on the Spectrum 48k as I could find, and below are the ones which understood - which a pleasing amount did."
Try to talk to the evil gypsy tribe in Ultima 6 about sex and prostitution. And they are quite ... umm ... flexible.