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You were all set on heading back to Erid, which now meant you just had to sit back and wait. What better way to spend that time than explaining each other's cultures?
You were in the middle of explaining the education system to Rocky, at least, the one you experienced. Ryland was sitting on the bed, you on the floor against the wall and rocky in his little enclosure.
“... And at college, I started studying nursing and then switched like.. two years into it. I realized I didn't want to be a doctor. But I would still say I got a lot out of it.”
“Need word.” Rocky said.
Ah. “Right, I don't think we've gotten to much of healthcare stuff. Basically a nurse or doctor is someone who knows medicine and heals people. But at least I know a ton about the human body!”
“Don't get him started…” Ryland said, groaning as he leaned his head back. “Whenever that gets brought up he starts asking about it and it gets..” He trailed off, but you have been subject to enough conversations with Rocky and Dr. Grace to understand.
“Because Grace won't explain. You watch me eat, so why not explain more human reproduction concepts? Trade.”
You laughed. “Because Ryland is pathetic and can't handle talking about sex.”
“I am not- Pathetic? Me? I can talk about.. about.. sex.” He said, face already burning red as he frantically searched for anything to look at that wasn't you.
“Really? So, why don't you explain everything to Rocky. If you're so good at talking about it.”
You stood and put your hands on your hips, watching him expectantly with a sly smile.
He stumbled over some words for a bit, trying to make up some excuse for why he couldn't.
“Grace could show if can't speak.” Rocky suggested.
Admittedly, that idea did get you flushed.
Things between you and Dr. Grace were… tense. You and him were the only two humans for thousands of miles stranded in space. Both of you were desperate for the loving touch of another person but asking for it was still hard, especially since you still weren't really together despite being, as Rocky said, destined to be mates.
Maybe this was your chance to pounce.
“I- I'm not-”
“I think that's a good idea.” You cut him off. “For science, just like you said, right Dr. Grace?” You placed a knee on the bed as you leaned closer to him.
“But- well... Science is good but there's other ways to-”
“I'm sure you remember being a student once, Dr. Grace.” You put a hand on his shoulder, making him freeze. “It's much easier to learn when the lesson is more… personal.”
“That is… true.”
Your other hand raised to his face, slowly slipping off his glasses. “So?”
Ryland nodded, “Right. Okay. You have to do all the explaining though.”
“Perfect!” You said happily, a stark difference from the teasing tone you had just used on him. You turned to Rocky, who seemed to suddenly be much more attentive- though it's always hard to tell with him given he doesn't have a face.
“So Rocky, you've mentioned that intercourse on Erid is mostly for reproduction?”
“Yes. Eridians use for reproduction. Some have intercourse for other purposes, but it is rare.”
“Well, humans have sex for fun quite often. We have places on the body called erogenous zones. These places have high nerve sensitivity and being touched in these spots can cause sexual arousal.” You turned back to Ryland, caressing a hand along his jaw, feeling the stubble that he hadn't yet been able to clean up. You thought it suited him, though, so you hope he'd keep it. You lifted your other leg, strandling his thigh for a more comfortable position.
“One is the lips and tongue. That's probably why humans kiss.” Your thumb pressed against Rylands bottom lip and his breath hitched. His eyes flicked down to your lips. You couldn't help but tease him more, so you decided not to kiss him despite being so desperate to.
“Another is the ear.” Your hand slid back to his ear, trailing your finger around it. “And, the neck.” You finally leaned in, pressing a kiss against his neck. Ryland gasped, your name slipping off of his tongue.
You pulled away, pressing a finger to his lips. “Shh. I believe you said you wanted me to do all the talking?” You chuckled, as he let out a shaky breath.
“Can't see Grace well. Change position.” Rocky insisted.
“Hm…” You moved off of his lap, not before noting the feeling of his already semi-hard cock against your leg. “Turn to face Rocky.”
Ryland did as you said immediately, and you slotted yourself behind him.
“There.” You placed your hands on Rylands hips, grabbing the bottom of his shirt, and lifting it off of him. “There is also the nipples.” You wrapped your arms around Ryland, pinching both his nipples between your thumb and forefinger. He gasped, head leaning back. You made sure to speak next to his ear. Unsure of what to do with his hands, he opted to place them on the sheets, roughly fitting them. “Those who are female at birth have beasts to feed children, a process called lactation. Because of how a child is formed in the womb, those who are male at birth still have nipples, but do not usually have the capability of lactation.” Ryland groaned as you twisted his nipples and kissed the edge of his ear.
“Please.. c-come on, you're teasing.. teasing me.” He gasped your name again as you pinched a little harder.
“Mhm? What is it that you want? Don't you always say to use your words, Dr. Grace?” You grinned against his neck, kissing right over his racing pulse.
“You.. Please, touch my.. my cock.” He mumbled, turning his head to the side. He couldn't bear to look at Rocky. Just the thought of knowing two people were here to see him act this pathetic..
“Alright, I guess that brings us to the last erogenous zone.” You slid your hands down to his pants and tugged them down enough to free his cock. You bit your lip- it was bigger than you imagined it might be. You grasped it with one of your hands. An average thickness, a vein running up the left side and a bright red tip from all the teasing you were doing to him. You had to bite back a moan. Your mind was flooded with thoughts of pushing him down and riding him until all he could mumble out of that pretty mouth was your name and chants of “please”. Or, him pushing you over the desk and pounding into you, as a punishment for teasing him so much.
But, you were focused on giving Rocky a good lesson, so that can come later. You let out a shaky breath and continued. “The.. the medical term for this is the penis.” You gathered the pre cum from the tip and slowly pumped your hand up and down. “For intercourse, the penis would be inserted into the vagina for the male to share the sperm. It can be very pleasurable for both the male and female.”
You lifted your free hand to his nipple again, lightly tracing circles around it. “Humans also have a practice called masturbation where they pleasure themselves since touching erogenous zones causes sexual pleasure.”
You could tell Ryland wasn't going to last much longer. His breathing was fast and shallow as he bucked his hips into your hand erratically.
“And..” You suddenly stopped, squeezing the base of his cock. “Pressure on the base of the penis, closest to the testicles, can temporarily reduce arousal and stop ejaculation.” Ryland moaned, one of his hands frantically reaching for yours.
“Please, please, please make me cum. I- I- I need to. Please, let me…” Ryland begged. When you glanced at his face, you could see tears forming at the corners of his eyes. You did plan to tease him for longer, but it had probably been a while since someone had given him a hand job like this. Maybe you should be nice.
“I will, I will..” You whispered to him, slowly pumping his cock again while his hand loosely hung on your wrist.
“Please, please-” He whimpered, eyes squeezing shut.
You grabbed his jaw and turned his head towards you before kissing him. Ryland gasped before quickly leaning into the kiss, hungry for more of your touch. You pulled away, looking into his eyes.
“Be good and cum for me, Ryland.” He moaned, legs tensing as he came on your hand and the sheets.
He panted as he came down from his high, and you gently kissed his neck and shoulders to calm him.
You chuckled. “Well, Rocky? Was that a good lesson?”
“Yes! Amaze amaze amaze! Human body amaze and also disgust. Need to know more about ‘sexual intercourse'!”
Ryland let out a sigh. “Maybe.. Some other time.”
You hummed, rubbing circles into his thigh soothingly. You gave him a grin. “So, there will be more lessons?”