A nice round belly

They move with a plan in mind, whispering at one another excitedly, before Sarah approaches you once more. She quickly removes your panties and slips another pair that looks nearly identical up your legs. Her lips once again fasten against your lower folds, delving between them with her nimble tongue to tease your shivering body. You find your arousal rising once more, unable to focus on anything other than the need to cum, that one glorious burst of climax, as she stands up and leads you back towards the mirror. She leaves you there, just for a second, as you paw with inexperience at your body, before she returns with some sort of ramp which she places in front of the mirror.

Her fingers once again return to your clit, but this time you find yourself sinking, your knees bending, as her hand slowly drops towards the ground. The contact, the need to cum so ever present that your body automatically follows her hand until your bent over the ramp. She continues to tease you needy body as you dimly hear *click* a few times. When she withdraws her hand, you try to follow but realize you can't, your body has been neatly tied up within locks upon this ramp. Your head is slightly raised, looking at your flushed face and wide eyes, glancing back you can see your upraised hips with a slight downwards tilt towards your body, and just behind them stands your sister with a strap-on.

Gwen strokes the cock possessively, her eyes filled with a strange, excited light as she glances down at your naked, wet body. Your soft, supple curves bared to her view, bared for her pleasure as she slowly kneels behind you. With a shiver and a gasp you feel the blunt, demanding head of the cock rubbing against your folds. Sarah has returned, kneeling beside you, her lips against your ear.

"That's a good slut. You feel so much better letting us take control, don't you? This is the first time we've actually managed to have this work and its the first time we've had a fresh supply. You look so needy in your crotchless panties, your wet, aroused pussy lips begging to be fucked, to be used, to be bred. That's right, sweetie. Your little panties with the nice little message saying "Breed me", well, Gwen is going to look right after you. We've got a nice squirting strapon full of fertile cum just for you.

Sarah's soft, taunting whispers fill your ear, but fail to make much sense to your muddled mind as Gwen, with a single stroke, pushes deep within your ovulating pussy. Her hips begin to piston in and out of you, her hands gripped firmly upon your hips as she fucks you over and over. With a shuddering gasp you feel yourself cumming, your pussy squeezing and clamping against the strapon, Sarah whispering something about "opening cervix...", but you miss most of it as your body spasms against the bonds.

Gwen's right hand leaves your hip, even as she pushes to the hilt, and you feel a warm squirt deep within your body that does not seem to end. You finally feel her pull out, with a bit of a squelch, before they high-five with an excited giggle. You hear them dressing behind you, leaving you tied up and helpless, as you slowly doze off.