honestly just some real down and dirty nuts and bolts sex details i've seen wildly misrepresented out there for less experienced folks writing smut
precum: completely clear to slightly translucent, usually only a bead or two. not white (a sign of infection unless they JUST ejaculated and did not fully clear the urethra). not tons of it covering your hand or dripping down their balls (for effect, whatever, but you'd mostly see more precum as a result of lengthy denial/edging). taste is very mild, a bit salty, and varies little from person to person compared to cum or vaginal wetness.
cum: tastes wildly different from person to person and depending on what they ate, but generally has a base note of bitterness and sourness. cum will usually be a thick white liquid but sometimes will be thinner and more transluscent. older folks generally have more viscous cum that may be closer to cream color if you're really into Details. people generally do not have more than a few spurts of cum per orgasm unless you're writing hyperspermia or inflation or something.
vaginal wetness: day-to-day it's normal for it to range anywhere from clear and thin to white and creamy. that's all good. but the lubrication/arousal fluids released during sex are clear. you're only going to see white as a result of the day's previous discharge. please do not have your characters gushing white cream (unless there is also cum at play). they need miconazole.
squirting: the liquid is clear and thin. honestly like water. very very mild in both scent and flavor. can be just a dribble, can have a good amount of force behind it, more of a gush than a geyser. it's more like one uncontrollable pour of liquid than a series of spurts the way cum is.
vaginal flavor: the most accurate description ive ever come up with is drinking a moscow mule from a copper mug, but i recognize that's not accessible to many people. there's tartness and bitterness primarily, but there are often some deeper richer notes if you really wanna get into pussy sommelier stuff. varies a lot from person to person but the main flavor profile of acid and bitter is the core. you might also get a salty or musky note, especially at the end of the day. during the period, it pretty much just tastes like blood. no real way to sugarcoat that, although in fanfic people seem very committed to saying "pennies." it's blood. maybe a bit warmer tasting. like if blood is a squash then period blood is a sweet potato. if that's anything.
vaginal texture: silky. warm. always wet but moreso when aroused. arousal fluid is much more slippery than regular discharge. feel the inside of your cheek when your mouth is full of spit if you don't have a vagina you can put a couple fingers inside of. the vagina should not be tacky, sticky, gummy, or any other adjective you could also use to describe a piece of candy stuck half-melted onto your car's dash.
vaginal movement: the vagina gradually tightens for a few seconds before orgasm, when it clenches hard for a brief moment, and then pulses extremely quickly and then those pulses get slower. all of this happens within about thirty seconds. the clenching can be VERY strong and tight or it might be much softer like a flutter depending on the strength of the kegel muscles. that does not necessarily correlate with how "good" the orgasm is.
pubic hair: all people have coarse pubic hair, but the texture does vary from person to person quite a bit. some people have very tight coils and some are nearly straight. imo as with head hair, avoid describing it as anything but thick or coarse hair if you're trying to write x reader stuff.
circumcision: the vast majority of american men over 25 are circumcised to the point that most americans will see this as the default and might never even see an uncut dick irl. however, this is NOT AT ALL the normal in any other country on earth. please do your research and consider what suits your character! and if you're going to write someone uncut, PLEASE do not go yanking down their foreskin. uncut dicks are generally more sensitive as well.
ultimately, whatever floats your boat and knocks your rocks, but if you're aiming for more realistic smut and you don't have the personal experience to get some of those nasty details, maybe this will help
ive had sex with maybe 100 people in my day and i read a lot of fanfic and any time i see these written in weird ways i get so yoinked out of the moment like ah i see this writer is not familiar with what it is like to be in a vagina or holding a penis
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