Your sister- it's time to teach her a lesson.

You lay on your bed for a while, idly touching yourself while you think about how to test your powers. Dad's obviously into you, so he wouldn't be a good test... although you could **** him to let you fuck him next time. Mom's hot and you'd love to fuck her, but you want that to be special. Your mind settles on your sister, and an evil grin spreads across your face. You think it's time to teach your sister a lesson.

You wait until everyone's gone to bed, and then you quietly sneak into your sister's room. She's fast asleep. You can see she's wearing nothing but an oversized t-shirt and a lacy thong as she sleeps, and your cock is ready to go. You think about how to do this- you don't want to get in trouble, and it's important to test your powers out. You decide to run a few preliminary tests. You murmur quietly, so as not to wake up Melissa. "No one can hear what's going on in this room." You know you won't see an instant effect on that one, so you decide to go further. "My sister can't move or scream loudly, and she's naked."

At once, your sister's sleeping body is completely nude- her perky, tiny titties, her flat stomach... and the smooth, hairless pussy all easily seen. Your mouth waters and you decide it's time. You move towards her, pushing her legs carefully open. She sleeps on, and you nestle yourself between her legs, breathing in her scent. You've never been this close to a pussy, and you're aching to touch her. You decide to be nice at first- besides, you've always wanted to eat a girl out. You lick slowly up and down her slit, between her lips, catching the tiny nub of her clit in your explorations. She makes a small noise, but doesn't move- or can't move. You grin and keep going. Lick, lick, lick... her pussy is getting wet, and not just from your spit. You're happy you're doing a good job. You want to be a good fuck when you finally do get a girlfriend. You decide you've had enough of teasing though, and really dive in. You suck and lick and your sister wakes up with a long moan, her pussy twitching as she nears orgasm. "Ohhhhhhfuck, who-" she sees you, and her eyes go wide, "WHAT THE FUCK, JAMES? STOP! WHAT ARE YOU DOING, YOU SICKO?" You flinch, and hope to god your earlier command worked- you keep licking, listening for the sound of your parents coming to stop you. Nothing. Nothing but the slick wet sounds of your mouth on her juicy pussy and your sister's moans and protests. "What the fuck?! Why can't I move?! James, I'm your sister, stop! What the fuck?" You suck hard on her clit, flicking your tongue as you do, and she comes violently, her pussy spasming as she does. "OhHhHHHHH FUCK, NO! NO I DON'THHUYGGGG WANT TO C-CUUHUUM LIKE THIS!"

You grin as she comes, and sit up, scootching forward. You slap her mound with the head of your cock, laughing at your sister's plight. Her eyes go even wider as she sees your monstrous prick. "Oh fuck, oh no, please, please, please no, James, please, I'm a virgin, you can't, it won't fit-" You laugh at her, slapping her sensitive clit with your cock again. She whimpers. "There's no fucking way you're a virgin, sis. I see how you dress." You slide your head up and down her slit, trying to find her hole. Her pussy feels so fucking good... it's a good thing you can come as much as you want, because you don't think you're going to last very long. You find her hole and poke your cock barely at the entrance. "Not such a fag now, am I?" She's crying as she stares at you, unable to fight back. "No, no, please, James, I'm sorry, I'm sorry, I won't say those things anymore, okay? I won't, please-" You shove forward, burying your monstrous prick inside her as far as you can. She screams as you plunge into her, and you pause to breathe. You look down, seeing some blood. Oops! Looks like she was a virgin after all.

She's weeping, ragged little sobs and moans as she breathes through the pain. "Nooo, nooo, I wanted to save myself for the right guyyyyy..." You shrug and maul her tiny titties as you start to thrust in and out of her, your giant cock hitting her cervix on every stroke in. You feel like you're gonna come. "Not yet," you whisper, "I'm not going to come yet." Instantly, your need to come dies down to a manageable level. You can come as much as you like, but you want this first one to last. You plow your helpless sister slowly, groaning as the tight vise of her cunt milks your cock. This is bliss- you could never imagine how good fucking a pussy would feel. You start to fuck in earnest, and her whimpers change to shaky moans of pleasure as you begin to **** her harder. "OhhHHHhhh fuck, please stop, please, I don't wanna come, I don't waANNAAHHH-" You feel her tiny cunny spasm around you, and you groan. You're getting close to coming again. "I'm gonna come, sis, gonna cum-" Her eyes are wide and fearful, filled with tears. "Not inside! Not- AHH!- inside, I'll get pregnant!" You thrust hard and fast, and it's almost the point of no return.