#lubrication

Dark Cacao sat next to Pure Vanilla on his bed after a long day; he was watching the new recruits… and they sucked. It was exhausting looking over them. He‘d changed into his nightwear. He glanced over at his partner who was already in bed: Pure Vanilla cookie. Pure Vanilla seemed nervous that night, unusually so, and it worried him. He fidgeted with his thumbs, chewed on his hair… it was out of character. Dark Cacao couldn’t help but spare glances at him.

He decided to bite the rod.

”Pure Vanilla, are you alright? You’re acting differently.” Dark Cacao inquired.

Pure Vanilla’s shoulders slumped. He sighed, fluttered his eyelashes, then asked a question Dark Cacao didn’t expect from him.

”What are your opinions on, uh… sex? Intercourse?”

Dark Cacao was slightly taken aback. When was his partner interested in intercourse?

”Uh.. Why? Is that something you’re interested in doing?”

”…yeah. Yeah. I just thought, you know, uh… I trust you, I love you, same for you, so…” His usually closed eyes were now slightly squinted, looking down at his fingers, showing off his beautiful heterochromic eyes. “…I was wondering if we could take it to that level.”

Dark Cacao wasn’t sure what could’ve provoked this, not that it was his business. Had he truly changed his opinions on sex? He’d always been so paranoid about it, specifically about S.T.I’s. Maybe he’d done some research?

”If that’s something you’d like to do, Pure Vanilla, we can do it, absolutely… not tonight, unfortunately, if that’s what you’re asking, I’ll be busy tomorrow. Maybe next Saturday?”

”Yes… That’d be good. That’s wonderful. Thank you, Dark Cacao.” Pure Vanilla pressed a firm kiss on Dark Cacao’s cheek, causing his heart to flutter.

˗ˋˏ ♡ ˎˊ˗

“If we’re going to do anal sex, you’re going to have to douche, which is cleaning out the anus.” Dark Cacao searched his cabinet for his enema bulb. He found it, and filled it with lukewarm water. “Do you need me to help you?”

“No, I should be fine, dear… how do you know about-”

“Irrelevant.” Dark Cacao interrupted. “Are you sure you don’t need help? It’s your first time and all.”

“O-Okay… I’m sure.”

“Okay… gently insert it… try not to put air up there… do it until it runs clear. Take your time, Pure Vanilla.”

“Thank you,” Pure Vanilla kissed Dark Cacao’s forehead and made his way to the restroom. Dark Cacao heard the shower head turn on.

Dark Cacao waited close by the door, just in case. This would be Pure Vanilla’s first time having sex, he thought, and he wanted to make it count.

It took his partner about 45 minutes to do it. Dark Cacao took off his boxers, ripped open a condom packet, and carefully wrapped it around his penis. Pure Vanilla was still paranoid about S.T.D.s and all that, so he made sure he had a condom. He gave glances at his partner, taking in his slightly disheveled hair and long, white eyelashes.God, he looked radiant. His sun-kissed skin, his beautiful eyes… it got him excited thinking about it.

Pure Vanilla slowly took off his robe, and he faced his staff away. ”You still know what you’re doing, correct?” Pure Vanilla giggled nervously. “This is still my first time…”

Dark Cacao ran his fingers through Pure Vanilla’s majestic hair. “Don’t worry, dear; I’ll go nice and easy. Relax.”

Dark Cacao positioned Pure Vanilla under him: he laid him flat on his stomach. He massaged his shoulders.

”I’m going to put in some lube… it reduces friction. Let me know if you’re uncomfortable, okay? I want to make you feel good.”

He squeezed lube onto his fingers, massaged it. Then he gently spread Pure Vanilla’s cheeks and applied it to the delicate, sensitive skin of the anus.

”O-Oh… sorry, I just didn’t-“ He flushed. He was dripping with precum.

”No, don’t be sorry, dear, you’re perfectly fine,” Dark Cacao reassured.

He applied the lube onto the condom as well. He leaned down and kissed Pure Vanilla’s neck.

He glanced down at Pure Vanilla’s penis. It was slightly lighter than his tanned skin for not having seen the light of day. Pure Vanilla was already hard as a rock.

He slowly inserted his tip into the anus, the rubber pressing against the walls of the anus, and he felt Pure Vanilla tense once more. Vanilla let out a gasp, grabbing a tight hold on the bed sheets.

Pure Vanilla chuckled nervously.

”Are you alright? Do we need to stop?”

”No, no, uh… keep going, dear,” Pure Vanilla’s hand twitched.

Dark Cacao slowly inserted his dick deeper, thrusting slowly. He sighed in contentment with his grip tightening on Pure Vanilla’s soft hand and the other gripping on his shoulder.

Dark Cacao persisted, slowly gaining speed at a consistent pace. He moaned in pleasure. He brushed his fingers across his partner’s shoulder, burying his nose in Pure Vanilla’s neck, breathing in his sweet scent, littering his shoulder blade in kisses.

“M-mmh…” Pure Vanilla gasped and tensed once more. ”A- don’t… a- slow down, slow down…please.”

“Oh, was that too fast? Are you hurting?”

“N-No… just slow down, please…”

He did as told. He carefully thrusted:

In,

and out.

In,

and out.

In,

and out.

Dark Cacao felt like he was in ecstasy. The smell of hot sweat, the squelch of his penis throbbed at the pleasure,and he panted heavily.

“You’re so.. h-handsome, Pure Vanilla,” He praised, letting out another groan of pleasure.

“Oh… hah.. Don’t flatter me, handso…mmh…” Pure Vanilla gripped his hand tighter. His face was flushed.

Pure Vanilla’s breathing grew heavy. His fingers twitched.

“M-mmh… a-ah..” He moaned.

Then, in a flash, warm, thick cum squirted out Pure Vanilla’s penis and onto the sheets and his stomach. It came in a few, small squirts. The scent filled the room. Dark Cacao observed his partner’s ejaculation, and it made him even more sweaty and horny.

“Got excited… dear?” Dark Cacao gently teased. He was never into the hardcore degrading thing, even in bed.

“...Oh, be quiet… hah… you’re so gorgeous..” Pure Vanilla gasped.

“Hm-mm… good m-mood, hm?” Dark Cacao panted heavily.

Dark Cacao leaned down once more and placed gentle kisses across Pure Vanilla’s neck. His penis felt hard against Pure Vanilla’s anus. Dark Cacao felt hot and sweaty, and his throbbing penis was particularly pressurised in that moment. In one deep thrust, the pressure in his dick is released. The cum squirts inside the condom, getting some on his penis as well.

“G-gah…” Dark Cacao wheezed.

He slowed down a little more at the ejaculation. He sighed. Pure Vanilla cummed once more at that, some of it getting on Dark Cacao’s hand. They both panted.

Dark Cacao took a tender grip of Pure Vanilla’s penis, his fingers teasing around the tip. They both let out a shaky breath. Pure Vanilla’s breathing grew heavy, and he cummed out a little squirt at that.

“Hah…Hah…”

“I think… we’re done, hm?” Dark Cacao inquired, already slipping out.

“Y-yea…”

Dark Cacao took the penis out of the anus completely, slipping off the semen- filled condom and tying it into a neat knot. He threw it in the trash bin beside the bed.

Notes:

1. Technically, lubrication is used to reduce friction. When you need lubrication for specific purposes, you have to consider the many specific properties of the lubricant (e.g. density, viscosity, demulsibility, etc.). Normally, the wetness of an aroused woman is enough to reduce skin-to-skin friction and make the encounter enjoyable. She has the perfect density and viscosity for this. (Dry sex is no fun, e.g. sex after removing a tampon).

A good artificial lubricant for sex is designed to reduce skin-to-skin friction over a long period of time (no drying out, stays where it is applied). Water, for example, might seem like a good idea, but no. Mainly because it has a very low viscosity (it also promotes corrosion, but that's not relevant here). Anyone who has gone down a water slide knows that skin contact on the slide slows you down. You can even get stuck. The water is pushed out from under you and you have high friction. (That's why I don't like sex in water - but that's another topic.) I quote my old professor: "Water is for cooling, not for lubricating" - to be fair, that was said in a different context.

The 'period flow' is basically just normal blood (which is actually watered down compared to the blood in your veins) and some of the cervical mucus that needs to be flushed out. It's not even a perfect emulsion (if you use a menstrual cup, you may have noticed that the consistency is quite uneven). To be on the safe side, let's take the properties of the worst component of this imperfect emulsion: Blood. It behaves like water. And (I repeat) water is not a good lubricant.

2. When a woman gets her period, there's some additional lubrication to her natural wetness (when aroused), but it's minimal. Period flow is often overestimated. It's a total of 60 ml (we could calculate an hourly flow), but let's make it easy and estimate a constant flow of the whole amount for a whole day, so 2.5 ml per hour. Or half a teaspoon per hour. This is really not a lot of 'extra' lubricant (and we have been very generous in our calculations).

Now we put the two together:

The problem now is mixing them. When you mix lubricants, their properties change. Ask petrolheads about motor oil - you'll get a free lecture. Or ask my old professor: "Mixing lubricants reduces their performance".

When you have sex during your period, two types of lubricant mix together. The natural everyday lubricant (perfect lubrication) and the "period flow" (poor quality additive). This reduces the overall quality of your lubrication during your period. Basically, the blood makes your vagina more watery. This means that sex during your period has more friction due to the poorer quality of the lubricant. A little more quantity might compensate for the poor quality of the mixed lubricant, but don't count on it.

Conclusion:

At best, sex during your period will be like sex at any other time because the amount of extra blood is so small (but maybe the thought of it will turn you on and make you wetter), at worst it will just hurt because of too much friction.

So, if this were a risk management scenario: to be on the safe side, use lubricant.

Sorry if I destroyed any kink fantasies.

Full disclosure: I haven't found any scientific papers on the lubricating properties of period flow vs. natural lubrication, (just a paper on whether women like having sex during their period) but please let me know if you know of any.

Am I wrong?

Any comments? Ideas?

Thanks for your attention. Sorry for the lecture.