Advanced Primatology Ch. 04

"It's fine if you fuck him if you do it discretely and if you enjoy it and if it helps you do your work. But if you're going to be flirting with him all day half naked with all the other kids watching then I don't know what to tell you. It just doesn't seem like you're very serious about what we're trying to accomplish out here."

"Jesus Kate, I get it, okay. I'm sorry. I get it."

Kate sighed and rolled her eyes. She felt bad now.

"Look, I'm sorry too, okay? It's just that Roger the fucking boring guy was just telling me all these nightmare stories about the chimps and I'm nervous that we're not going to get the results we wanted and it's stressing me out. Sorry. But I mean it: you can have sex with Chad. I understand. You can do whatever you need to at night to make sure you're at your best for the next day. I respect that."

Kate stood up and unbuttoned her white linen shirt and then slid it off her shoulders. She'd taken the yoga pants off when she first got back from her hike. She stood there in front of Karin and Jess looking every inch the alpha woman in her black swimsuit and her full, ripe body.

"Really, Jess, it's fine. No judgment. I think it's great, actually. Just make sure to use protection. And try to keep it down. We're all sharing one cottage, and Karin and I need our sleep."

She turned her back on them and walked straight down the grassy slope to the lake, noticing that most of the undergrads had kind of stopped what they were doing and were trying to watch her without getting caught. Chad was pretending to ignore her but she knew he'd seen her, and she could tell he liked what he saw. And that other guy, Kevin, was looking right at her, and she noticed that he was kind of cute in his own way with his rail thin body and his adam's apple and his long bangs over his deep-set eyes. She looked right back at him and gave him a quick up and down in his long loose swim trunks that were riding down at his hips and showing off his ripped abs, which surprised her. She flashed him a friendly smile, nothing dirty, then looked to see how the other kids had reacted. Chad was staring at her full on now and she suddenly remembered herself, how hot she looked in the low-cut suit that showed off her curves. Yeah, that got his attention, she smiled to herself. Then she dove into the water and started swimming and she didn't stop until everyone else had gone to dinner.

Part 4:

Chad knew he was going to fuck her as soon as dinner ended and the music started. Someone had an i-phone and speakers and they'd taken them down to the little beach by the lake with some beers for a little party, just the undergrads and Jess. She grabbed him as soon as they got down there and started to grind on his leg, looking amazing in the pale moonlight with the stars reflecting off the lake and the three-quarter moon still low and big in the sky.

Jess grabbed the back of his head and put her mouth to his ear. She told him that she was going to leave now and in five minutes he was going to leave too and come to her room and she'd be waiting for him. She sauntered away in her pink bike shorts with the tribal pattern that barely covered her perfect ass.

Waste not want not, thought Chad, as he smiled to himself and decided to put the five minutes to good use. He caught sight of Karin dancing a few feet away from him with that other guy Kevin. Now that Jess was gone Karin was definitely the finest piece of ass at the party and Chad was impressed again. This Kevin guy was turning out to be a little bit of a player.

Game on, thought Chad, as Karin turned away from him toward Kevin, smiling and having a nice time.

Chad kind of eased up behind her like it was all a big joke, pretending to grind her a little and smiling and laughing while making sure to stay far enough away from her that she wouldn't mind too much. She turned toward him again and smiled and laughed and kind of shimmied her shoulders a little in the silky low cut v-neck she was wearing with her blue bike shirts that showed off her legs and her hips and even her crotch when she shook it.

"I'm finally getting that dance with my favorite TA," he smiled at her sweetly.

She rolled her eyes, clearly a little buzzed, and then turned around again. Then she surprised him. She kind of bent forward at the waist and stuck her ass out toward him and then backed it right up into him, smiling the whole time like she thought it was a joke too. Then she stood straight up again and reached back and grabbed the back of his head and started to grind against him a little, slowly, just once or twice. Then she turned to face him and now her crotch was grinding against his leg and her tits were against his chest. They felt amazing, heavy and full.

"You better get going, tiger, you don't want to keep Jess waiting," she teased him. Then she turned and started dancing with Courtney and Ellen who were smiling at him too and laughing.

Whatever. Girls were so weird. He walked the 500 feet over to the women's cottage and climbed the steps to the little porch outside it and walked straight through the front door. It had a large common room filled with laptops and files that they'd be using as an office during the evenings and each of the women had a tiny bedroom just off it.

He saw the door to Kate's room and wondered if she was awake in there and if she'd be listening to him fuck Jess tonight, and if she'd like it. He felt hard and flushed and dizzy again. Then he walked straight into Jess's room and closed the door behind him.

She was sitting on her bed facing him still in her pink bike shorts and her white tank top but with no bra underneath now. He took two steps toward her but then she motioned to him to stop. She leaned back and eyed him.

"Glad you could make it sweetie," she smiled wickedly, "how about you take off that t-shirt for me?"

Chad smiled and took off his shirt and let her look at him. He didn't have an ounce of fat on him from all the running during soccer practice and he had lean muscle all over him. He could see she was excited by it. He probably looked a little different than her grad student boyfriend, a chemist or something, a "real sweetie."

"Am I just here for the strip tease or do I get to fuck you tonight" he asked. Jess laughed.

"I haven't decided yet. First I have to examine you. Now turn around and pull the shorts down."

Chad smiled and did as he was told, grabbing the waistband and sliding the shorts slowly off his ass.

"Dios Santo!" he heard from behind him. "Now take them off."

Chad did it. This was getting interesting.

"So I'm guessing Professor Morgan said you still couldn't fuck me," he drawled. "Is that why I'm way over here and you're way over there?"

"No, actually. She gave me her permission, sweetie. She said she wanted me to. She said if I was a good worker then I could fuck you as much as I wanted for the whole trip."

Chad couldn't tell if she was serious or not (probably not) but he loved it anyway. He'd been hard before but now his cock was starting to launch off him again in that way it did whenever he thought of Kate and sex. He turned around to face Jess.

"I didn't tell you to do that," she snapped playfully. Then she took a long look at him.

"Come here," she said.

Chad stepped forward slowly until he got so close he could feel her breath on his stomach. She took a good close look at his cock and balls. Then she took her palm and started to rub his balls hard and then she rubbed the whole length of his shaft, pinning it back against his stomach and holding it there. Then she leaned forward and put her nose against his balls and took a deep breath and sighed. She moved her hands to his ass and groped it and his cock sprang forward and it was sticking right in her face.

"So do I get to fuck you?"

"I don't know," she teased. "Did team leader bring the right gear this time?"

He gave her his sweet smile. "Yeah, it's in my shorts. Should I go get it?"

"Not yet sweetie. No rush."

She took his cock in her hand and started to stroke it while she looked up at him with her big brown eyes. She started slowly but pretty soon she was jerking it hard and fast and her tits were jiggling and she was fingering his ass. He reached down and grabbed the bottom of her tank top and started to pull it off. She looked up at him again and rolled her eyes.

"Typical boy. Let me guess. You want Professor Jess to show you her titties?"

He nodded. She rolled her eyes again and laughed. She sat up straight for him and grabbed the bottom of the tank top and peeled it right off. Holy Christ. They were so firm and round and turned up at the ends that he couldn't believe they were real. He reached down and cupped them, weighing them in his hands and bouncing them a little. He moved his thumbs to the nipples. Jess squirmed away from him.

"That's enough for you," she scolded. She took his cock in her hand again and looked up at him. Then she opened her mouth and swallowed him and started to move her head back and forth, slowly, still looking at him.

"Yummy," she sighed, pulling off him for a second, "I think I'll just blow you for now and we can save that condom for later. Okay sweetie?"

He nodded. She swallowed him again and wrapped her lips tightly around him and started to suck him again, almost riding him with her mouth. Christ she was good at this. He'd never felt anything like it.

He puts his hands on his hips and tried to relax. He had a plan. He wanted to cum hard and fast for her right now to break the tension and maybe get Jess's guard down a little. She'd be relaxed and pleased with herself then and she'd want to get off too. Then it would be easy to get the bike shorts off and get in bed with her naked and probably fall asleep in each other's arms. He'd let her rest for a while and then wake her up with a hard naked shaft right at her opening and just take it from there.

Jess had both hands spread flat against his stomach now and her nails digging into the bottom of his chest and she was sucking him long and fast and hard. Chad could tell that she couldn't believe how hard his body was and how hard his dick was too. He had his hands in her hair and was moving his pelvis along with her and moaning and drawling her name.

"Awwwww Jess, you're killing me,"

She really was. This was a woman not a girl. And she was a woman who had obviously sucked a lot of cock in her time and who really enjoyed it. He knew she was going to be an absolute firecracker when he got his cock up inside her, and the way things were developing he might even get to fuck her raw tonight. She put her hands on his ass cheeks and spread them wide and then put a finger to his anus and started to circle it hard. She took his cock out of her mouth and stroked it and looked up at him.

"You gonna come for me now sweetie? You gonna come for professor?"

She put her lips to his balls and started to kiss them and massage them with her tongue while she stroked him hard. He was right on the edge already. He could hardly believe it. And then she did something fantastic that he'd only felt a couple of times before. She stuck her finger in his ass, pretty deep actually, and suddenly, and that really did it for him. He came hard and long while she kept right on stroking him. He was cumming all over the place and groaning and when he finally came to his senses she was sitting there laughing and shaking her hands with his sperm hanging in thick drops from her face and breasts. She looked gorgeous.

He grabbed his t-shirt from the floor and sat down on the bed next to her and laughed and apologized while he cleaned her off. Then they kissed passionately and he laid her down on the bed next to him and slid off her bike shirts.

Five minutes later he had his head between her legs and she was pulling his hair and calling out his name loud enough for Kate to hear for sure, while she rode the edge of a big orgasm. He was rock hard again. He knew what she liked. He took her ass in his hands and pulled it up off the mattress while he tongued her clit and stuck his finger in her anus to return the favor.

"O Chad, yeah baby," she started shaking and gasping and bucking her hips and she didn't stop for four full seconds.

When she did stop he moved up behind her and spooned her with his hard cock up against her while they fell asleep.

A half hour later Chad had his cock between her thighs and his hands on her tits while he kissed her neck. She woke up a little and started to grind her ass against him.

"Feels nice," she said.

"Yeah? Not too sleepy?"

She shook her head. She grabbed the back of his head like Karin had done at the party earlier and started to grind him harder while he pinched her nipples and moved his hips along with her. She was soaking wet already and it felt warm and velvety against his hard shaft. He kissed her neck and moved one hand to her stomach and her pubic hair while he put his mouth to her ear.

"Can I fuck you a little sleepyhead? Should I get the condom now?"

"No, I mean yes, I mean, I don't know sweetie."

"What don't you know?"

"I don't know if I want the condom. I hate those things. I should never have gone off the pill."

Chad was maybe harder than he'd ever been in his life and his heart was pounding against his chest. Why? He'd fucked dozens of girls bareback and shot his load inside them. So why was this so much hotter? Was it just because she was older and her body was fuller and riper and she wasn't using any birth control? And why shouldn't that be hotter? Wouldn't that make sense? That he was hotter for her because it made sense for her to be the one to implant with his seed. She was stronger and more determined and more experienced than Elise, or Courtney or Ellen and she'd be a better mother for his baby (which he didn't want to have) and a better mate to mix his genes with. So he'd been programmed by evolution to get harder for her and to cum harder for her too.

He had his fingers on her clit now and she was riding them while he angled the tip of his cock so it was right up against her opening. He had his other hand spread flat against her sweaty chest as he rubbed it hard.

"I hate them too. I can never stay hard in them." He changed the angle of his cock so he could run the whole length of it against her wet lips, letting her feel it.

"That would be a shame," she teased. "Poor sweetie." She grabbed his cock by the base and angled it toward her slit.

"Just go slow okay sweetie? And try not to cum all over me this time. Use your shirt or something. Okay?"

He nodded. She eased back and she was so wet she took almost the whole length of him inside her in one try. He could tell she loved it.

"O my god, o my god, so big, go slow."

He did as we he was told. She felt amazing. She was soaking wet but her wetness felt different and better than any girl he'd ever been inside before and it just felt amazing around his cock. And when she ground back against him slowly and tilted her pelvis he was pretty sure that the tip of his cock was against her cervix and it felt soft and warm. He'd done a lot of internet research about signs of fertility and he was pretty sure these were some of them. He wanted it to last all night but he could tell he wasn't going to. He'd lost track of time but they'd been fucking for maybe five minutes like this, slowly, and he was already right on the edge. Christ what was wrong with him tonight. He was like a fifteen year old with his quick trigger.

And Jess was already on the edge too. She was quaking a little now and making the sexiest and longest moans he'd ever heard, over and over, while she bucked her hips and rode him a little harder

"Ooooooohhh oooooohhhhh oooooooohhhh."

She was cumming for sure but it was different than any girl he'd ever felt cum on his shaft before and it just kept going and going. It was like her whole body was cumming and then he felt something that blew his mind. She changed the angle of her pelvis and suddenly it was like her cervix tipped upward or something and a whole new part of her just opened up to him and she started shaking harder. And the walls of her pussy seemed like they were contracting around him and pulling him into her and holding him there while she bucked her hips harder.

"Ohhhhh ooohhhh ooooohhhhh. Be careful baby."

Chad was right on the edge and he didn't know what to do. She'd told him not cum inside her but he wanted to cum inside her more than anything in the universe. But he also wanted to fuck her again tomorrow night and the next night and if he came inside her now she would be pissed and maybe she wouldn't let him fuck her again right away.

"Ooohhhh ooooohhhh ooooohhhh."

While his mind was thinking his body was getting ready to do what it wanted. It took everything he had to pull out of her at the last instant and grab his t-shit and hold it to his cock while he came and came so hard he nearly passed out from the rush of it.

"Thank you sweetie. That was amazing. Tomorrow I won't be so sleepy and I'll fuck you hard, okay?"

He spooned up behind her and they went to sleep.

Part 5

It had been a terrible night for Kate, maybe the worst of her life. Now she was up early to do yoga and try to clear her head for the day's work. She had so much riding on this trip and she needed to put everything else out of her mind except the chimps in group M, and where they were and what they were doing. She'd figure everything else out later.

She hadn't gotten off to Chad last night because she was still a little hurt and jealous by all his flirting with Jess and Karin, and still a little pissed at herself for feeling that way. And she couldn't hear him and feel him through the walls like back at the hotel anyway. So she'd opened her laptop and put on her headphones and looked at some more of the videos on Brian's flash drive.

The more of them she opened she more upset she felt and the more dread. It almost made her nauseous. It wasn't that most of them were about male professors having sex with their students. She didn't mind that. It was that most of the videos starred the same actress, the little blonde one with the small, perky breasts and the pony tail and the upturned nose that made her look a little snobby, a little superior. Brian really liked her. And she looked a lot like Elise.

She knew what she was going to find long before she actually opened the folder titled "pics." She'd known it for months, actually, without realizing. She clicked on the folder and then clicked on the first of many files and she wasn't surprised at all. It was Elise on her knees naked looking up at the camera and smiling mischievously with Brian's hard dick in her hand and his cum all over her face and chest.

Part 6

Chad woke up at the break of dawn feeling refreshed and energized. He got up and got dressed and walked back to the guys' bunkhouse where his gear was and looked through it quietly so he wouldn't wake up Kevin (who was in bed with Ellen he noticed) or the other guy. He found his speedo and slipped it on and then walked down to the lake. He wanted to have a quick swim to clear his head before their first hike to see the chimps today.

He'd had a great night, maybe the best ever. He felt close to Jess and maybe even a little in love with her. But then he saw something that made it all disappear.

Kate was up early too and she was doing yoga by the lake while the sun came up in front of them. She was in downward dog in a pair of black bikini bottoms that showed him all of her incredible ass and her long legs, and a little half t shirt that was hanging loose around her and riding up her chest so her breasts were practically spilling out of it. He stood there and enjoyed her for a while and then she opened her eyes. She was looking straight at him upside down through the little gap between her legs. He couldn't tell exactly, but he was pretty sure she gave him a good long look, down and up, lingering a little on his package in the tight speedo.