Your elephant sized siblings continue to push their private parts against you, smearing all manner of foul substances along your body as they try to convince you to have sex with one or the other. You start to worry you might suffocate between their thick flab without them realizing, but they're much too large for you to escape or push them away. To your right, June's rancid anus threatens to swallow your head, while to your left Liz's moist brown jungle looks ready to tangle you up and trap you. With both horrible orifices closing in, looks like your only hope is to make a choice.
"June!" you cry out just as curly hairs begin to cover your lips. Both first stop and pull their body parts away from you, June wearing a big smile at your decision.
"Yay! Steven picked me! My big brother wants to have sex with me!" the blubbery ginger cheers loud enough for half the floor to hear her.
"Well, I guess that's your choice," Liz says, conceding defeat. "Honestly, though, who could blame you? Look at this tight, sexy, virgin ass she's got." She moves next to June, her huge hands grasping her titanic cheeks firmly and spreading them apart to give you a full view of your little sister's goods. Her unwashed anus, winking excitedly at you from between those pale, freckled mountains; her long, flabby taint bearing shitstains from months past; and her fat, pure pussy lips, glistening with a moistness that tells you she's more than excited about your decision. "It's no wonder her horny big brother would want first dibs on taking her virginity."
June begins backing her fat ass into you, and though you try to crawl away you're quickly overtaken by the mountain of flesh as her gigantic ass comes down in your face. You'd be suffocating if not for the depth of her crack, but even though there's room to breathe doesn't mean it's possible. The air quickly gets thick and hot and reeks of sweat and sewage; not quite as bad as being under Gwen, but it's still quite awful. You can hear the low grumbles of June's bowels as her shitter slowly pulsates against your face, her ass sweat dripping profusely onto your face and soaking into your shirt.
"Lick my butt real good big bro!" June commands with a smile, wriggling her jiggly form on top of you. "I'm gonna play with your big boy part!" Again, quite like with Gwen, your dick is sticking up between June's chunky thighs, but she doesn't seem interested in having you fuck her pussy. You feel her fat hands explore its length, experimenting with different regions of it. She's especially interested in your fat tip wrapped in foreskin, as she pulls and manipulates the sensitive layer of skin, unknowingly sending waves of pleasure through you.
"Here's a fun thing to do with his cock, June," Liz demonstrates, leaning down between June's legs and taking your shaft into her warm, wet mouth. Even with all the disgusting things you saw her shovelling in there this morning, you can't deny that it feels utterly incredible. Her huge tongue seems to know exactly where to go, with precision you didn't think would be possible for a muscle that size. "Did I tell you I also give the best blowjobs in school, Steven?"
"Blowjobs look like fun!" says June, interested in anything she can put in her mouth. "And Steven, why aren't you licking my butt yet?"
"Push down more; you got a big butt versus his tiny tongue, maybe he just can't reach." Oh you can reach alright, the thing is already right up against your face. June continues to sit harder though, and even though you're squished between fat and a mattress, it's starting to hurt. Out of fear of her breaking something, you stick out your tongue to appease your sister.
"Ah! Now he started!" June cries out as your tongue makes contact. Out of surprise, she lets out a little FRAAAPTT in your face, making you cough. You'll have to keep going if you want to survive though. The surface of her rectum is bitter and turns your coughing into gagging. "It tickles my butt and my peepee at the same time somehow!" June only stays on top of you for a few minutes of this, but to you it feels like hours. Every time your tongue runs over a patch of shit, whether it be hard and lumpy, dry and flaky, or fresh and slimy, you feel like you want to throw up. You hate even more that Liz is giving you a world class blowjob while you're doing this, giving your brain the illusion that you enjoy eating ass.
You soon feel the telltale signs of an orgasm building up in your crotch, and in no time you're blasting jets of cream into your teen sister's huge mouth. With a few flicks of her tongue, your load is gone without a trace, and she releases your slobbery shaft with a grin.
"Wanna try, sis?" she asks June, who is quite enjoying the work you're doing. "I'll show you how to suck like a pro."
"Yeah, I wanna, give a blowjob!" You thank God as June finally frees you, and take in as many breaths of fresh air as you can. You find your body is quite spent from all the loads you've shot today, leaving you helpless as your kid sister takes position between your legs. Under Liz's guidance, she brings her soft lips around your drool soaked rod, encasing it in humid warmth. You're glad Liz emphasized avoiding using her teeth.
"Now you just just move your head up and down," Liz explains, holding her sister's greasy hair gently, and slowly guiding her head along the path. "You can try licking it like a lollipop while it's in there, that'll make him feel really good. Especially under his foreskin, that's where it's super sensitive." June follows her instructions experimentally first, unsure what the results would be, but gains confidence when she sees your face contorting in pleasure and hears the little moans escape from your mouth. You don't want to enjoy this, but how can you not?
"Look at you go!" Liz has now completely let go of June, allowing her to suck you off at her own pace while your older little sister masturbates to the sight. She's obviously not as good as Liz, but your balls are tightening all the same as you watch her orange curls bouncing above your groin. "The boys at school are gonna love you, June."
For the umpteenth time today, your hips start bucking and your nuts contract as you give June a mouthful of your cream filling. She's a bit surprised and jumps back a bit since so far she hadn't seen anything come out of your dick. But after taking a few blasts to the face while deciding what she thinks of your flavor, she wraps her lips back around your shaft and tries to suck the rest out like milk through a straw.
"What's all this yummy stuff?" she asks, licking the last few dribbles from your tip as you start to calm down. Her chubby freckled face and ginger hair are glazed with a thick layer of your seed.
"That's his cum, kiddo," Liz informs her, licking a glob off her sister's cheek. "That's what boys shoot inside of girls' pussies to make babies."
"I don't wanna have babies, I just wanna eat it! Your cum is super tasty bro!" June tries to find every bit of cum you covered her with until there's none left. "Do you have any more cum for me Steven?" she asks, licking her lips.
"Oh he's got lots, just look at these balls!" Liz points out that your nuts are bigger than even her huge fist. "If he shot that much just from us sucking him off, imagine how much will come out if you use that ass he loves so much?"
"Oh yeah, Steven likes my ass, doesn't he?" Hearing your kid sister saying things like "cum" and "ass" is so surreal, but sickly arousing somehow. "How do I use it though?"
"Here, get up on the bed and I'll show you." June lugs her huge body up onto the bed, it's frame creaking loudly in agony at her weight. Liz directs her to stand with her smelly feet to either side of your waist, her chunky ass like a pair of pale, freckle covered meteors looming over you. Liz directs her to spread the huge mounds apart to expose her shit chute while she holds your rod straight up. "Okay, sis, sit down on his cock!" With the force of two meteors, June eagerly impales herself on your schlong; it's a miracle her weight didn't shatter your pelvis. The slobber on your dick combined with the sweat in her asscrack allows you to slip right in, June howling with pleasure as you pop her anal cherry.
"Aaaahhh! Your cock feels so good in my ass, Steven!" The young ginger moans as she begins slowly bouncing on your shaft. "It's sooo big!" If the neighbors haven't heard anything yet, they can definitely hear the loud rhythmic creaking of the struggle bed, combined with the sounds of hundreds of pounds of flesh slapping against you. The only thing in your sight is June's big bouncing booty, and the only sound you can utter is a regrettable moan of pleasure.
"Oh my god, this is so fucking hot," Liz pants as her fingers go to town in her southern forest.
"Ahh, Steven! I... I feel something...! Nnng!" June's grunts and gasps continue to escalate, and you figure she's close to cumming; in fact you hope she is, since maybe it'll give you a break. "Ohh, I... Ahh! I can't...!" You suddenly hear a loud gurgle from her mid-lower region... you're pretty sure that's not a normal indicator of a female orgasm.
"AAAAAAHHHH!" SSSSSCCCCCCCCHHHHHHHHPPPPPPPPLLLLLLLLLOOOOOORRRRRRRTTTTCCCCHHHHHH
You've heard of girls having accidents during sex, but never to this degree. A tidal wave of chunky, greasy, liquid shit explodes from June's asshole as she cums. With your dick acting like a plug, streams of the horrible substance squirt everywhere, including your face and all over the bed. It only gets worse as she gets off of you, as it allows the full force of the shitstorm to pour out, completely covering your body and the bedspread in awful sewage. It takes every ounce of strength to keep from vomiting.
"Ahh, that was so much fun!" June cheers as she farts out a final few shit chunks. Did she not even care that she just shit all over everything? Liz's response shocks you even further.