Crossing the Line - Cover

Crossing the Line

Copyright© 2019 by Twren

Chapter 2 - Camping Trip

Incest Sex Story: Chapter 2 - Camping Trip - Samantha is a smart, attractive 17 year old high-school senior who had grown up with her younger brother as her best friend. This is a story about how she came to realize her ideal mate had been living just 10 feet away from her for her entire life. Starting with the discovery of their unconventional feelings towards one another during an experiment with Ecstasy and progressing through the Holidays and on into College, Alex and Sam nurture the well of emotions and lust that grow between them

Caution: This Incest Sex Story contains strong sexual content, including mt/ft   Mult   Teenagers   Consensual   Drunk/Drugged   BiSexual   Heterosexual   Fiction   Humor   School   Sharing   Incest   Brother   Sister   Group Sex   Cream Pie   Double Penetration   First   Masturbation   Oral Sex   Petting   Tit-Fucking   Big Breasts   Violence  

The camping trip

Samantha stretched as she woke up, yawning and glancing at the dashboard clock she said “how much longer till we hit the trail head? Looks like we’ve been on the road a few hours now” Her boyfriend Michael glanced over at her from the drivers seat of the 4-door Jeep Wrangler and replied “Good morning hot stuff, looks like were about 45 minutes from the trail head, then itll take us another 2-3 hours to reach the camping site down by the falls. Id say we should be there and set up by the time were ready for lunch as long as Reed and Jo dont want to stop too much along the way”

Sams best (girl)friend was named JoAnna, but most of their group of friends called her Jo or Joey, and she was in the truck behind them with her boyfriend Reed. Mike picked up his CB handset and toggled it on “Hey Reed hows it going back there? Is your princess awake yet? Mine just woke up” Mike said, glancing over at the disheveled bundle of feminine beauty in his passenger seat, imagining her in some of the sexual positions he was hoping to have her in before this trip was over. Sam looked back at him with a smile and a wink, knowing what thoughts he was harboring in his mind.

“All’s well back here, trying to get some road head but JoJo’s not being very cooperative haha” Reed said into the CB while chuckling “Give me that!” JoAnna said and yanked the CB out of Reeds hand “hey guys its Joey, you think we could stop in a few minutes for a bathroom break? Id like one more time in a real bathroom before having to find a tree to defile for the next 3 days” “Sure” said Mike, “were coming up on a rest area in about 20 miles, should be there in the next 15 minutes or so”.

As she hung the receiver back up, JoAnna looked at Reed and said “now about that road head comment...” she reached over and began to stroke Reeds semi-hard dick through his basketball shorts. “No shit?” Reed said, glancing at JoAnna and trying to determine if she was just playing with him or if she was serious. “Why not? I see you’re ready for it” she said, pulling his shorts leg up so she could get full view of his semi-erect 7 inch penis. JoAnne unbuckled and got on her knees, leaning over the armrest and taking Reeds shaft into her mouth fully, swirling her tongue around and bringing him fully erect in less than 5 seconds. Then, as if nothing was amiss Joey sat up, buckled herself back in and asked “are we stopping anywhere for breakfast? I’m kinda hungry”

Reed looked at her with his jaw agape. Completely at a loss as to what to say, but being known for his eloquence and poetic ways, he settled for “uh ... bluh” and tried not to swerve as he began readjusting his shorts and preparing for an uncomfortable 15 minute ride to the rest area. JoAnne simply smiled sweetly at him in a manner that seemed to say “serves you right”.

In the Jeep Samantha and Mike were making small talk, she was telling him about her family coming to visit and how it was ok for her to go on this trip because family was always coming over for holidays. While they spoke, Sam couldn’t stop thinking about the incredibly unexpected sexual encounter she had experienced with her brother 2 nights beforehand while she was high on MDMA and the fact she had forced her brother to ejaculate inside of her. Never in the 2 years she had been sexually active had a boyfriend made her feel the way she felt that night with Alex. But enough of that for now, she was on this camping trip that had been planned for weeks, and she was going to enjoy herself!


“I took some of the Molly the night you put them in my bag” Sam said to JoAnna as she took a puff from the joint and passed it back to Joey. Sam had swapped places with Reed once the group had hit the start of the trail because the girls wanted to chat and the guys were more interested in talking to each other over the CB than paying attention to their girls just then. JoAnna was driving the truck and doing fairly well considering they were legitimately off-road at this point. Joey looked at Sam and tried to act nonchalant as she asked “oh? How was it?” But Sam could hear the jealousy in Joey’s voice. “It was great!” Sam said, “Alex has this ultra-soft blanket he let me use and I had that thing wrapping me like a cocoon. The feelings of touch you get is just of the hook” Sam would never tell Joey the dirty details of that night, because she knew that it was considered “weird” and socially frowned upon for a sister to fuck her own brother and that kind of thing could turn Sam into a social pariah, shunned by everyone in her peer group and friends at school. “You ever think about where that phrase comes from?” Joey said “ ‘off the hook’ I mean, what is it talking about? Fishing? Wouldn’t ‘off the hook’ be a bad thing in that case?” “Ok I think you’ve had enough of thiiiiis” Sam said as she pulled the joint out of Joey’s hand, “You’re driving Missy, I dun wana die haha” “Oh FINE” Joey said, pretending to be in a huff “ ... um what were we talking about?” “HAha the BLANKET, you dum dum” Sam said, taking a puff of marijuana and blowing it out the window.

“Oh, right! Im jealous! Did he let you bring the blanket with you this weekend? Id love to check it out, ive always wanted a really nice microfiber blanket” Joey said “Nah, he doesnt like to share haha” Sam said, still thinking about the way her brother had never really liked to share his toys or possessions with the other kids, even their friends. With she herself being the sole exception because Alex would share anything with her. “Ahh” Sam sighed, she loved her brother. But always before it had been because they were best friends, and now it had grown into something more ... she thought about how his cum had been sticking to her in the morning when she woke up. After fucking, Alex and Sam had stayed entwined for the rest of the night, and while Sams drug addled brain had eventually drifted off to sleep, she could have sworn that something more had happened with Alex while she was asleep. Sam would have to talk to him about that when she got home in a few days. Not that she was upset or put off by the idea of her brother using her body while she was passed out, she was not. In fact, Sam was having difficulty thinking about anything else right now ... the weed was helping though, allowing her mind to wander.

“We will have fun don’t you worry” Sam said to JoAnna reassuringly.


“LUNCH IS READY!” JoAnna yelled to the two boyfriends as she and Sam sat down around the campfire that the boys had started first thing upon reaching the camping spot. The boys were close by, but distracted by setting up their cabin-tent. This thing was massive! It had a main room that everyone entered into first, then it split off into 2 other sections on opposite sides of the tent, each with its own access both inside and outside the main room, and each other section was able to be closed off by a zipper flap similar to the main entrance.

“Phew” Reed said as he and Mike grabbed their camping chairs from the jeep and sat down next to their girls, “took nearly a half hour for us to set it up, but that thing is going to make one hell of a hotbox later tonight”.

Samantha grabbed a couple plates and made them up for the boys, then lit up another couple joints to be passed around the group. Mike grabbed Sam by the waist and pulled her onto his lap, trying to show his appreciation for her taking care of the food, but also because he wanted an excuse to have her very attractive rear end grind up against his shaft. They sat there talking and smoking for a couple minutes. JoAnna brought out one of her books, and after lunch was done, Mike spoke up and said “the waterfall is just down the bend, about a 5 minute walk from here if you guys want to go check it out. I dont think it would be a great idea to be messing around down there once we start drinking or taking the X”, Mike was referring to the Ecstasy that JoAnna had procured and was in one of Sams bags just now. All agreed the waterfall sounded like a nice way to pass some time, but being winter and with the snow all around, they did not want to be away from camp for too long.


Later that first night after having visited the waterfall, the group was back at camp and inside the tents main chamber. The boys had recently finished bringing in all of their bags, blankets, and accoutrements and the girls had started passing around JoAnnas bong that Sam had just packed with snow from outside. “Ok, so explain the snow inside the air chamber of the bong” Reed said “ is that supposed to be like ice in the water?” “Yeah” explained Sam, “but this is way better in my opinion because the smoke stays in contact with the coldness of the ice for longer than it would just going through the water. This way you get a suuuuper smooth draw and I find it’s less irritating to the throat” As she said this, Sam took the bong from JoAnna and, with a swift, practiced hand, quickly checked the stem and cannabis to ensure it was properly packed, then proceeded to take one of the biggest draws that Reed had ever seen from a bong. “HOLY SHIT” Mike exclaimed, “Easy there babe, remember were doing Molly tonight too, you need to be awake for that!” “Oh shit yeah, I almost forgot! Break those pills out Sam” JoAnna said, tossing Sam her purse and grabbing the bong back from her. As Sam exhaled and the tent began to fill with smoke, she rifled through a few pockets of her purse and found the pills she had moved from the first aid kit to her purse earlier that morning. Still in the modified 1-dose Tylenol packets, JoAnna had gotten 12 pills and each one was a dose. With 2 doses to a packet, there was a string of connected packets rolled into a small spiral in her purse, in order to look like just some every-day headache medicine.

Sam ripped off a packet and threw it to Reed, he examined it and found the small slit on the back of the packet along the crease line. He opened the packet and let the two small pills drop into his hand, handing one to his girlfriend JoAnna, who at the same time, passed the bong to Mike. “So we have about an hour after we take the pills before they start to kick in” JoAnna said, raising her eyebrow, “who wants to play a game?”


Back in Colorado, Alex was laying in his bed looking at his phone and stroking his hard shaft. Soft moans could be heard from the phone, as he watched a recording he had made of the night before when he had fucked his sister. Samantha had passed out, near as Alex could tell, near the end of the 3-4 hour window after she had ingested the MDMA. Both still entwined on the lower pull-out bed, Sam had continued to gently grind and hump Alex’s leg until she fell asleep. Alex whispered softly to Sam but she did not rouse from her sleep. He couldn’t BELIEVE he had just fucked his sister! But, “damn” he said as he looked at the clock, “its only 2:45AM”. Then he looked down at the lump of blanket and sheets that was his naked sister, and repeated to himself in a more considering tone “its ONLY 2:45AM”.

Alex got up and closed the window, then turned on the small space-heater he had in the room. With the lamp-light still on the low setting, Alex reached over to the night-stand and grabbed his phone. After a few minutes, the bedroom was getting nice and toasty. Alex gently took the blanket covering his sister off of her so that Sam was lying there curled up and completely naked. Alexs’ shaft was beginning to throb while he started recording on his phone, he reached down and opened up Sams legs so he could get a good shot of her beautiful thighs and vagina. Alex went to his dresser and, after taking a moment to make sure the angles were right, set up the phone so that it was looking at the pull-out bed at a downward angle from the top drawer. Alex went to his sister and the head of the bed, so that he was standing over Sams face and eyes. If she were to open her eyes right then, she would have seen his balls only a few inches from her face. While stroking his hard shaft, he reached down with his left hand and lightly pinched Sams left nipple, firmly grabbing a handfull of tit in the process. There was no reaction from Sam, she seemed to be completely oblivious and asleep, so Alex bent over her and began gently sucking on her right breast while he continued to stroke his cock. After a few minutes of this, Alex heard a soft moan escape his sisters mouth, and noticed her hands start to move up and onto his back. He quickly backed up, but upon looking at his sisters face he noticed that she still appeared asleep - or her eyes were closed at least, but then he noticed her left hand had moved from her side and gone down to her stroke her pussy lips.

Taking this all into consideration, Alex bent over his sister and put his lips on hers, waiting to see if she would do anything. Sam opened her mouth and immediately began sucking on his lower lip. Long, soft sucking action that almost would seem lazy if not for the thoroughness of it. Alex took full advantage of this receptive attitude and began sucking on her tongue in return. “Oh her saliva is soooo sweet! I absolutely love the taste of her mouth” Alex said to himself. After he eventually tore himself away from her juicy pink lips and tongue, he raised himself up on his knees so that he could place his sack onto Sams face while he finished stroking himself. Alex really wanted to cum all over his sister while looking at her beautiful body. As soon as Alex’s sack touched Sams lips, her mouth opened and she began to kiss those as well. With the same slow, sensual kisses and pulls with her lips, the tongue lashing out every few seconds for a good lick to add some saliva. Alex was harder than he could bear right now, his shaft literally aching with each pulse that went through it. He continued to stroke himself and touch his sisters breasts and watch her fingers playing with her own pussy lips while she sucked on his balls. As the pleasure became greater, Alex’s strokes became longer and less desperate. His world was perfect right now. Without a break in rhythm, Alex was timing when he would come to orgasm. There was this thing that Sam was doing with her mouth every few dozen strokes, she would open her mouth wide and suck both of his balls into her mouth and run her tongue all over and around them before letting them out of her mouth again. As he stroked, he saw her fingers go deeper into her pussy. Just then, her mouth opened and she began pulling and sucking at his nuts. At that moment Alex let himself release. There was not a lot of cum since he had just finished emptying his balls into Sam not even 90 minutes ago, but there was enough for a nice thick line all the way down, the end landing on her right hand that was still inside of her pussy ... Alex wished his sister was back home with him and hadn’t gone camping, they hadn’t talked about it much other than the morning after when she had noted all of the cum on her body. She did not seem ashamed to him though. Sam looked him in the eyes like always and spoke directly to him when she had been done cleaning herself up. He didn’t know what would happen next with his sister, but his imagination was running wild with the thought as he continued to watch the recording and stroking his hard shaft.

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