I Hate my Sister
 
Tonight is date night. Not for me, of course. Our parents decided to spend the night on the town for their anniversary, and warned us that they wouldn't be home until very late. I say "us", as this was directed at me, as well as my older sister Jenna, whom I was now stuck alone with.
 
Jenna and I have an... unusual relationship. If you saw us without knowing us, you would never guess we were siblings. While I'm skinny and stand at just under 5ft, Jenna towers over me at more than 6ft tall, and has quite large... assets. It all started when I was still a pretty young kid, but that's a story for another day. The short version is that she discovered I was just the right size to help her have a good time. As time went on, she got more and more comfortable calling on me this way, regardless of how I felt about it. I suppose I could have tried harder to get her to stop, told our parents or something. I don't know why I never did. Maybe it was easier to just deal with it than make an issue, or maybe some part of me enjoyed it and just didn't want to admit it. And that leads us back to tonight, stuck in my house with Jenna, and I have a pretty good idea of what she has planned.
 
I hear a knock on my bedroom door, and look up from my computer to see her enter my room. All she's wearing is her boy shorts and her "Sugoi Denkai" t-shirt. She has long since stopped being at all shy about her intentions.
"Why even bother knocking if you don't wait for me to answer?" I ask, turning back to the screen.
She shrugs at me, "Force of habit? Who cares, what's got your panties in a twist?"
I sigh. "Well, our parents just left for their date, and you're in my room wearing that. Do you really need to ask?"
She gives me a big innocent smile. "What? I'm just dressed comfortably to spend a nice cozy evening hanging out with my little bro." As she says this, she comes up behind me and rests her tits on my head.
"Who are you fooling?" I groan at her. "And get those off of me, they're fucking heavy."
"Fine." She pouts, stepping away from me to sit on my bed. "Come on, I'm bored and horny. You're not doing anything important anyway."
I start to protest, but she is right about that. She had interrupted me grinding the same dungeon in FF14 I'd been running all day, and I was still no closer to getting that damn weapon than when I'd started. I was more than a little frustrated, and needed a break anyway.
"Alright, fine damnit. Just try and be quick for once, alright?" I said relenting, and almost immediately regretting my spinelessness.
 
The instant I said this, Jenna unceremoniously grabbed my arm, pulled me onto the bed next to her, sat her huge ass on my face, and began grinding my nose into her asshole through her shorts.
"Oh, thank you bro! I really needed this. Being stuck at home so much lately has me feeling really pent up." she said gleefully, already starting to dampen the cloth pressed against my mouth.
I attempted to say something snide in response, but anything that came out was completely muffled under the two giant globes of fat being pressed into my face.
This went on for another few minutes, until Jenna had thoroughly sopped through her underwear and covered my face in her musky fluids.
 
"Alright, that's enough foreplay." she said, lifting herself from my face. I gasp for air, having gotten precious little of it the last few moments, and knowing I was about to have even less on offer. Jenna slid her soiled shorts onto the floor, and tossed her t-shirt along with it, leaving herself standing in front of me completely naked. If she wasn't my sister, this would have been a pretty pleasing sight. Jenna was the definition of THICC, having huge tits and a giant ass, as well as some very wide thighs and a bit of a belly.
 
"Sit up." she ordered. At this point, she was done being coy and teasing me, she wanted to get to business. I did as she asked, sitting on my knees on the bed. "Seriously, don't take as long as l--" I started to say as she positioned herself over me, but was cut off as my head was plunged into her crotch. Standing over me with her ass towards me, she held me by the back of my head and began forcing my face into her pussy as she grinded on me. Being so much larger than me, it didn't take too much effort before my head slipped entirely between her folds. Sitting on my shoulders, Jenna began pumping up and down my neck, using my head as her dildo. Inside her, I couldn't see anything. My head was being squeezed from all sides by slick, slightly sticky walls of flesh. I could hear the squelching noises she made as she fucked my head harder and harder, as well as her increasingly loud moans. As she got closer to climax, the taste and smell of her fluids became all the harder to ignore, and more and more of her fluid surrounded my head and forced it's way into my mouth and nose. I have no idea how she didn't suffocate me doing this, but after having had this happen enough times I stopped questioning it.
 
Finally, after what felt like hours, but was actually just 10 minutes or so, Jenna let out a final, very loud moan, as she came. The walls of her pussy squeezed down on me, and she pressed her thighs together around my shoulders, and finally my head slipped out of her trembling crotch. I see her laying on her hands and knees in front of me, her ass stil facing me. Her pussy was twitching and dripping with juices, as was my head and shoulders. "Well, I'm glad that's done." I say, starting to turn away from her, when she grabs my head again. "Nuh uh uh. I'm not done with you yet."
 
Before I can offer any protest, she presses my nose into her asshole again. With my face firmly pressed into her ass, she stood up in front of me, and then began to sit down on top of me. Her pucker slowly opened up around my nose, and continued to slide over my still heavily lubricated face. I tried to push her away, but with her weight on top of me there was little I could do. With a loud POP my head slipped fully inside her colon, leaving her once again sitting on my shoulders, only this time with my head up her other hole. However, she was not done yet, and I knew where this was going. Unlike her vagina, which couldn't comfortably fit much more than my head, Jenna had a sizeable belly, and with my small stature, she wanted me much deeper. Using her thighs to squeeze my shoulders together, she managed to slowly slide them into her asshole as well, pinning my arms to my side. This went on for several minutes, with loud panting and squeaks throughout, as even with the lube provided by her pussy, it still was a rather difficult task for her to fit my entire body through her asshole. However, slowly but surely, the pucker descended down my torso, over my crotch, down my legs, until Jenna was sitting on the bed, with my feet just barely poking out beneath her. My form was barely visible, squirming in her intestines, with only small movements visible through the layer of fat.
 
Finally content, Jenna stood up from the bed, pushed on my feet until they too were swallowed by her ass. Her famous "disappearing act" was complete, and with that she made for her room. "Phew, that was fantastic bro. Thanks again so much." I attempted to respond "Go fuck yourself, just let me out of here already. I told you to make it quick!", but I knew that from Jenna perspective she would only hear the slightest bit of muffled speech coming from below her, and even if she could hear what I was saying she probably didn't care. She was lost euphoria, exhausted from her pleasure. Too tired to bother showering off, she simply retrieved a clean t-shirt and pair of underwear. As she slid her panties on, she let the waistband snap, as if she were sealing me inside with them. She then flopped onto her bed, and her breathing began to even out. I started to struggle against her. "Hey, let me out of here. Don't leave me in here overnight again!"
 
Feeling my squirming, she responded "Sorry bro, having you in there just feels so good, and I'm too tired to squeeze you back out right now. Have a good night, I'll see you in the morning." Then, rubbing her belly contentedly, she fell asleep, leaving me squeezed in her intestines until she could be bothered to release me.
 
"Sigh. I knew this is how tonight was going to end."