Thank you for sharing your Force. I am very happy to find others discussing similar pet peeves of mine and learning of how to improve my own writing.
My two pet peeves that I have yet to see anyone mention is reading about a character taking a woman's ass and then sticking his cock in her vagina. Sometimes the author is knowledge able enough to suggest a woman do something degrading and humiliating such as cleaning the shit off his dick for him but that fails to negate the biological danger of doing so. A human's saliva fails to act as an antiseptic soap.
If the man wants to kill the woman he is having sex with then sure go for it but at least keep in mind that the woman is likely to fight the man or dissuade him some other way; That is until he has had a nice thorough bath/shower with plenty of actual soap.
Even a mindless drone/sex slave should have the same self preservation instinct as an ant would.
And the second pet peeve, is use of negation with narration. That is narrating with words such as not and never. That is outside the already error in using them outside of dialogue such as: She isn't very nice. I forget what consolidating the two words is called at the moment and Google is failing me.
Anything anyone ever narrates with a negative, is better said in a different way with a positive. Such as: "Being nice is beyond her nature." It takes more words.
However, I tend to keep silent about it because of the immense effort in convincing someone to 'think' differently without an abysmally low likelihood of success. Besides I believe more in personal responsibility instead of trying to convince others how to behave.
I cringe a little whenever I see the words "cervix" or "womb" during a sex scene. I understand that in some contexts they nod towards a domination or impregnation fetish, or that sometimes you don't want to overrely on "vagina," "pussy," etc. That said, every so often those words are used to emphasize the size of a man's penis in a way that seems anatomically possible. As in, the whole point of a woman's cervix is that you cannot penetrate it to fuck her womb directly.
I agree abundantly with this. Please correct me if I am wrong but despite the nickname a penis is just a muscle and tissue. Even in the unlikely event that a man's pecker does get that far, 'touching' it would cause pain instead of pleasure. A woman may perceive a light sporadic 'tickling' as pleasurable but as you said the whole vagina and cervix is designed to 'prevent' direct access to her womb.
I have read that the quickest and easiest way to impregnate a woman is to help her achieve orgasm. As only then does the cervix spasm open due to outside stimuli. Otherwise, as I understand, it opens hours later after the sex.
I think that a sperm can live inside a body for a couple days before it dies on its own. That time is a lot shorter if it finds an egg to fertilize. It takes the combined efforts of a couple million sperm to breach an egg's defenses and that process takes hours if there is an egg already embedded within the womb's walls. Even then it takes 1-3 days after an egg has been fertilized before even the most sophisticated test has a good chance of detecting the pregnancy. Thus any knowledge of impregnation a character has immediately after the event is from a divine source or magik.
I differentiate character knowledge because I have enjoyed threads that narrate in anatomical detail events as they occur, kind of like having x-ray vision. Such as the Sherlock Holmes movies. However the narration is from a god's perspective or the character is simply using their imagination and in Sherlock Holmes's case extensive education.
I find mentioning of breaking through a woman's cervix and 13" cocks as abundantly immersion breaking. An author breaking physical or biological principles without explanation why an extremely rare abnormal mutant is breaking said principles, is craziness. Often, I find the author is attempting to interject reverse racism and I find both ways generally distasteful and major turnoff. I mean, they are perpetuating a factual falsehood in order to suggest that one race is better at sex than another. it is extremely redonkulous.
I have seen several images of the vagina and womb connected while in missionary like pose. It is simply would kill a woman if a man somehow managed to get any cigar shaped RIGID object into her vagina past that curve. Or the man would be willfully breaking his own dick to actually follow the path the vagina takes to the womb.
The only exception is if sex is being performed in a few different position that contorts the vagina into being longer, such as doggy style or cowgirl. Or, I believe I read that a man having her leg up over his shoulder while straddling the other leg can achieve a similar situation.
The virginity question is so common in porn that I often use it, even though I know the anatomical truth.
My personal pet peeve is bra sizes. Many many authors totally get them wrong. Too many times I've seen a woman who has been described as slim but big-breasted as being a 40-DD or something like that. That is not a slim person.
The number of the bra size is the measurement of the ribcage just below the breasts. So a slim person is going to have a slim measurement, 32-35 inches. The letter then tells how many more inches is the measurement across the nipples (or the largest part of the breasts) -- A = 1 inch, B = 2 inches, C = 3 inches, etc.
For a 36 inch chest with a 40-inch across-the-breast measurement, their bra size is 36D.
I never knew this about bra sizes, but often wondered. I blame my education from public school.

lulz However, now that I know I will keep it in mind in the improbable event that I will literately describe a woman's breast size.
As others have said, I prefer at most for the author to describe whether the bra size is less, equal to, or more than a stereotypical hand size. Anything else I wish more writers left up to the reader to decide based on what they favored.