Your mind says no but your body rebels.

You have absolutely no desire to get that massive dildo shoved into your ass. You know this to an absolute certainty. So why exactly as she walks over to you does your mind panic that she will see your cock and reach down to pull it forward and tighten your thong so she won?t have a chance of seeing it from behind. Then before you have a chance to stand or do anything else you feel the back of your thong pulled down and the nozzle of the bottle of lube stuffed unceremoniously into your ass. As the thick purple liquid is pumped into you and she begins rubbing it all over your hole you let out a little moan.

?No Rachael, it is too big.?

?Don?t worry Kristi. I will be gentle.? You feel her fingers stretching and prodding your hole. ?Relax, just breathe long and slow and enjoy it. Trust me.?

?Fuck her with it Rachael, fuck my sister.? You hear Richard goad her on.

?You are getting pretty loose baby, you are starting to like it aren?t you.? She asks softly as she rubs your ass and probes you with what you think are three fingers now. ?Here, exhale softly and slowly as I put in just the tip.?

?Oh god, it can?t fit, it is huge.? You resist the urge to pull away as you feel the pressure build against your sphincter. Impossibly you feel the pressure deepen and you know the massive thing is in you. ?Oh my.? You gasp. But you do what you are told, you breathe slow and easy trying to resist the urge to clench your ass as she works it ever deeper into you.

?Good girl, I have 6? in at least. Shall I fuck you now, or do you want more??

Richard offers his two cents first and you turn to see him stroking his shaft vigorously. ?Give it all to her, stuff it in and fuck her, we know that is what she wants.?

?No don?t fuck me with it, I don?t think I can take it.?

?Ok I won?t fuck you yet, let?s see how much more you can take.? You feel another gout of lube run over your ass as she works in inch upon inch into you. You find it increasingly harder to catch your breath, and the massive rod in your ass, plus your sharp panting causes you to cease talking and do little more than moan and pant. Finally when you are sure she is going to cause you to burst, she finally pulls back. The world slows in your eyes as she draws the massive dildo out inch after inch, till you realize she must have had it in all the way to the cute little fake balls attached to the base. Then right before she pulls it all the way out the world stops, you feel your raging hard cock blast cum into your little panties, and she shoves it all the way back into the vacant chasm created by it?s absence till you feel the balls slap your ass. ?Your sister is so hot.? You think you hear Rachael say as she begins blasting you over and over, fucking you like a machine. Finally she pulls it out apparently satisfied after what surely was only a matter of minutes but felt like days, and declares to the world. ?Enough of this, I want me some pussy.? You feel her pull it out with a satisfying pop and your ass trickles with purplish ooze as she grabs your hip and starts to roll you over.