I know you may want to. I know you may think: God, I really need to use that word. No other word can describe what's going on better. The word is perfect, it's awesome, it epitomises everything that's happening.
But I tell you now- the word "queef" doesn't epitomise anything. It's not cool, it's not the perfect word. It's a stupid word that's going to kill the eroticism in your story stone dead. No point getting the paddles. Don't charge them. That thing is cold and blue and in need of burying.
Queef is not sexy. It means fanny fart (which is another phrase you should avoid), but it reduces fanny farting down to its least sexy components. Imagine that! A word that actually makes fanny farting less sexy.
And then there are some other words and phrases and sentences, that may also turn your story into night of the living dead:
1. Leakage. Old people leak. Old people leak when they've lost control of their bodily functions. Your hot characters do not leak.
2. Seepage. Wounds seep. How gross is that? You want your main characters fanny to be like a wound? Ugh. Especially wrong when paired with the word "anal". Nobody wants to hear about anal seepage.
3. Flaps. As in fanny flaps. Just...no. No.
4. Beef curtains. See: flaps.
5. "He penetrated her clitoris with his finger". This one falls into the "I don't know a fucking thing about anatomy category", but has as big a cringing effect as "She looked at the anal seepage that had queefed onto the bed". And yes, I've actually seen someone use that very series of words in a story. Not the anal seepage series, obviously. The other one. Thank God.
6. "He breached her womb". Same category as the one above. Dude, if you're breaching her womb with your cock, something's going wrong. Horribly wrong. It reminds me of the movie Alien, only in reverse. Penetration of clitorises and wombs means you're probably using a pen knife. Ugh. Ugh. Ugh. A thousand times ugh!
And that is my list of things you should never say in erotica/erotic romance. Just don't. I mean, I'm sure I could be wrong. I'm sure there are some wonderful moments in both erotica and erotic romance that employ those words and lines. I'm sure.
But I'm also sure that authors should try to avoid contravening the laws of anatomy when writing about sex. And that every author should think, really think about what their potential readers are going to find hilarious in the middle of a steamy scene.
Hilarity can come from the characters - "they giggled at each other" - but it should never come at the expense of them, in good, hot, erotic fiction.