"Come on! I need to shower before my date!" The voice that pierces the door and the haze of your ongoing orgasm that is starting to fill the tub is unmistakebly your sisters. You start to pant, head swimming as your climax continues, cock jerking and spraying thick yellow semen, hot and musky, all over the bathroom. It's not ending any time soon and you pant, trying to think of something to say but unable to string together a functioning sentance. "No....you don't...." you grit your teeth, eyes squeezed shut as you force the words out, "Need to....shower." She stops and goes, "Well I mean, I don't really need to shower, but I still need to use the bathroom! Come on Jason!" You grunt, forcing out more words as you spatter the sink and mirror with cum, "No Jenny, you ... are going to..." suddenly your back arches as the most powerful blast yet tears through you, elicitng a moan and a sudden involutary, "FUCK ME!" You shudder and realize that you've stopped cumming. It must have been a full hour already! The entire room is coated in a thick layer of semen and you realize the doorknob is turning. Half-exhausted, you start to stagger to your feet, a wave of cum rolling off of your body as the door opens to reveal your big sister, wrapped in a towel and smiling at you. "But Danny can wait..." she says, tossing back her thick dark hair and smiling, towel just covering her slender pale frame, starting to slip lower and soon revealing a perky B-cup breast tipped in a stiff nipple, "He can't fuck me like you can Jason."
You stare at her awestruck as she drops her towel to the floor in the puddles of cum, revealing her naked body to you as you say, "You don't think this is weird?" She laughs and shakes her head, "No, why should I? " Her hand slides over your cum coated skin to tug your massive cock. You realize that what you've said must do more than simply come true, it must have rewritten the world so it was true, entirely. "I mean..." she says, "I know we shouldn't but..." She smiles devilishly as she meets your eyes, "I just can't resist." She presses against you and your eyes sweep down over her lithe pale form to her shaven sex as she rubs a hand against her labia, eyes on yours as a finger slides into her hole...."Oh god Jason, your scent has me so wet!" She groans, sliding a finger out and pressing it to your lips. You swallow, still uncertain but with her before you and the sweet metallic taste on your lips you groan and say, "I can fit?"
Jenny laughs and says, "Runs in the family, doesn't it?" Her hand dips back in and she slides in one finger, then two, then her whole fist, pulling it out with a slurp as you push against her, kissing her fiercly. She moans, her tongue dancing with yours as you lift her by her ass, massive cock jabbing at her as you set her on the edge of the counter, massive flared rod positioned against her gaping labia and then you slide in and you feel her cunt split around you, milking your mottled musky cock as your balls swing between your legs and you slowly start to push into her, each inch making you shudder in pleasure. In fact you feel yourself edging rapidly towards a climax again and you groan heavily, meeting Jenny's eyes. "I'm not cumming until you do." Suddenly you feel stuck on the edge, ready to cum but unable to, and you gasp, starting to piston and groan, biting Jenny's neck and pawing at her breast as she gasps and bounces with each thrust of your massive rod, her cunt only able to take the first eight or ten inches but slurping greedily with each one. You pound into her for a good ten minutes, until her mouth drops open and she lets out a gasp of ecstasy and the flood gates open and you pump your hot cum into her, the seed sputing around the seal of your flared cock as she groans and tries to push you away, your cock stuck inside her with your flare and you realize the volume of cum you produce and with a shuddering gasp and a loud pop you pull out, releasing a flood of cum from her cunt and from your cock simultaneously. You manage, just barely to gasp out, "I'm done cumming..." and it stops, allowing you, panting and sweating and still half covered in cum, to make eye contact with your smiling sister and you say....