She looks very pissed, better run for it

You make a break for the trees, struggling through the tall grasses. You hear the camper van's door slam open behind you, as well as curses and mad grunts. Stacey is not as encumbered by the uneven terrain as you are, and rapidly gains on you. Seeing that you won't be able to escape her in time, you turn around and yell for her to wait, to stop, to try to explain to her that this is all a big misunderstanding. But you're cut off mid-sentence by a swift punch from her hook hand to your face. You reel backwards, and that's when she hits you again, and then again against your back.

"Ya' fucken cunt, don't ya see we were in tha' middle of somethin' intimate?!" She knees you in the stomach, causing you to retch. "Ah gross. Can't even take a hit like a man either."

You fall onto your back. She towers over you like a triumphant predator. In the distance you see her older sister stumble from the camper, grinning wildly. Stacey keeps wailing at you until your face is swollen and bruised. You're pretty sure you've lost a tooth.

"That'll teach ya' not to be a Tom ya' perv!"

The older sister moans gutterally as she sees her sister on top of a stranger. Her steps are weak and awkward, as if she were dragging her feet, but she lost no time bridging the distance.

"Siiosssssteeeeer... I neeeeeed... I neeeeeed cooooockkkk..."

Stacey stops for a second and looks back between her sister and you.

"Ya' know wha'? That'd serve ya' right bein' turned by my sis'. She needs all the help she can get coolin' her holes. An' then I'll kill ya'. Yeah, that'd serve ya' right."

She stands up and lifts you by the collar. You're too beaten up to resist and you're dragged back to the camper van. She has to push her ravenous sister away when she passes by, who keeps trying to lunge and grab at you in an attempt to get to fuck a cock already, but Stacey is adamant to take you inside first where there's no chance for escape or interruptions. You're flung onto the sofa that the two sisters were just moments ago making love on, and it's even still wet with their secretions. The older sister struggles slowly but surely up the steps. She's drooling from her slack jawed mouth, her eyes nearly blank with ochre yellow, her pupils barely visible.

"Coooock, cooooooock... sissssterrr... I wannnttt... I neeeed coooock...""

"Yeah yeah, pipe down, I'll give ya' a cock." Stacey unzips your trousers and pulls them down around your knees. Your cock sits there flaccid, but she's already prepping it up for penetration by tugging and fondling it with her meaty hand. Despite your wishes your dick slowly inflates and stiffens, getting seriously hard. "There, got it nice an' ready fer' ya' sis'." She moves out of the way, still grasping it with her pinkie extended, pointing it upwards. The older sister awkwardly waddles onto the sofa and shuffles her body over yours on her knees. You cringe, trying to back away, but Stacey's tight grip on your cock keeps you in place. Her sister's oozing wet hairy pussy hovers over the head of your dick. You feel droplets of her vile infected juice drizzle down, forming droplets that roll on down. With an animalistic growl she slams her hips down, nearly encapsulating the whole member. You gasp 'fuck' under your breath, and she bends her head down to lick the wounds on your face, getting her tongue extra red.

"Man taste soooo gooood..."

"Damn right sis', fucking's the best." She grabs you by the cheeks and gently stroking her hook across your lips. You struggle weakly, whimpering. "Tis' too late fer' tha', too late fer' strugglin'; yer' one of us now!" Stacey licks your face as well, and her lips meet with her sisters. They kiss sloppily, viscous gooey spit mixing with blood. Your cock gets even harder from looking at this; it's as if you're finding all of this so sexy now, an unnaturally **** burning in your stomach. The older sister starts slamming her thin bony hips up and down on your shaft, her pussy clenching and holding onto your cock. 'Oh god' you mouth with soundless words.

"Sooo gooood," she moans, humping away blissfully and mindlessly, "streeeetch my cuuuunt... ruiiin my hooooole... teaaaar and riiiiiip- teaaaar and riiiiiip my hoooole!"

You grit your teeth. You proceed to thrust your hips up, tying your arms around her waist, flesh slapping -slamming- against flesh. You're both frantic and mad, nearly foaming. You thrust with all your might. You even growl, baring your sharpened teeth. "Riiiiiip hooooole!" you exclaim triumphantly as you release your infected load into her womb. You both grunt and moan like crazy beasts, yellowish cum dribbling down both of your legs.

"Serves ya' right," Stacey says, "yer' lucky ya' could help my sis' out with 'er infected rut."

"Fuuuuuuuuck..."

"Fuuuuuck me mooooore!" The older sister kisses you, but with more bite than kiss.

After this you're kept around for a couple more rounds of fucking, but once Stacey thought you've outstayed your welcome she stabbed you in the throat with a pair of scissors. She did say she'd kill you. Once dead, her sister continued fucking you, consuming your corpse bit by bit over a period of a couple days. Even Stacey slowly got in on the fun once she eventually lost her mind, receding back into the natural infected state of mindless lust and depravity.