Actually, that 'slang' as you call it is what publishers want. They WANT cock, balls, pussy, etc instead of more mainstream terms. They want heat and heat tends to not come from proper anatomical terms. The whole point of reading some of this is it's 'naughty'. And the naughty parts come from the word usage. Last three go 'rounds with the pro edit i had to change terminology to something more heat driven from the mundane to amp up the heat level. So, it appears, what people want is the naughty, not proper terms.