Me inside their pussies

You panicked and typed the first thing to come to mind. as soon as you hit enter your door bursts open. In storms Rebecca and Zoey, glaring at you as you sit there panicking. Did it not work?

Zoey stomps her foot. "HOW DARE YOU. You creampie Rebecca without her knowledge, and you wont even stick so much as a finger into either of your sisters." You feel the tension evaporate as you realize your frenzied typing actually worked, sort of.

You stare at them incredulously. "So, you aren't mad that I came inside of Rebecca, you are mad that I wont touch you?" Zoey gives you an indignant nod. You glance back at your computer, a feeling of dread slowly welling up inside you. You regretted your choice of words immediately, but now you might have to live with this.

Zoey leans over you with a glare. "If you don't want us to tell others about your little portal thing you are gonna satisfy us." Rebecca just nods in agreement.

You feel trapped, if it was just Rebecca you wouldn't mind, but this is your sister... While you are busy despairing Zoey surprises you by jumping onto your bed and snatching the pen from next to your laptop. You attempt to stop her, but Rebecca blocks you from getting up. Her toned body more than a match for your couch potato self. Zoey scribbles something and you feel a strange sensation on your groin.

Zoey crows. "Hah, we will return this in a few days along with the pen." Rebecca backs off and you look in horror as you see a penis attached to a credit card. You quickly pat yourself only to realize, that is definitely yours.

The two girls flee the room and you sit there in a daze. Its not long before you feel them stroking you and getting you hard before you feel the soft embrace of someones pussy as it gently messages you. You moan softly as they pick up the pace, seemingly determined to wring you out. Finally you cant hold back anymore and you release a full load of cum directly into Rebecca or maybe Zoey. You had never thought about doing anything to your family members before, but the thought that she **** you to do this is almost enough to get you hard all over again.

You feel yourself pulled out, and then inserted into the other girl. This time they don't play with you, they just keep you inside them as you feel their muscles tense as, you assume, they get up.