Taken for a ride.

"Let's not waste any time. I want to see exactly what your new friend has got."

His hands reached out and pulled closer, one hand on each of your hips as your sister eased you closer until you had been pulled atop him, straddling over his lap with his fuckrod stroking dangerously close to your soaking hole.

"Let me jut get you ready, babe." came the lustful cheer of your sister as she took her boyfriends cock into her mouth, slicking it with her saliva. This shouldn't be happening you tried to plead with yourself. Come on, get off him, you can get out of here. But your body was wasn't answering. The feel of Eric's hands rubbing over your bare hips while giving teasing little laps over your nipples kept you in place.

An audible slurp announced that Gwen had pulled her mouth from his tool and was now lining it up with your puffy pink lips as he lifted you up by your hips.

No you could stop this. You could still just get away. You could still-

"Arrnnnnngggghhh~!" you groaned out hotly as you felt yourself impaled by his thick cock, his hands pulling you down by your hips until he had buried his entire length into your hole.

"Fffuck, she is fucking tight..." he groaned in delight. "You sure she's fucked before?" He didn't bother waiting for any sort of answer though and instead began bucking his hips upward to bounce you on his lap. The combined **** of his upward thrusts and gravity pulling you back down had your petite form bouncing atop him helplessly, each time making you pant and whimper in slutty bliss. Soon he didn't even need to thrust at all. You were riding him of your own will!

"She's getting into it!" Gwen cheered as she cupped her boyfriends balls and massaged them, her free hand working into her own pussy to keep her arousal high. And she was right, you WERE getting into it. Your hips weren't just bouncing now, but instead were grinding and wriggling atop his fuckstick with wild abandon. His hands stayed on your hips, holding them tightly as you fucked. His own groans were mixing with yours and were drowning out any resistance you ever had.

Gwen had begun to occupy herself by sucking hungrily on Eric's hanging balls and licking his shaft inbetween thrusts. "Mmm, he's getting real close. What do you say Jane? Want him to fill you up? I don't mind. Want him to stuff that little pussy full of cum?"

Her words were sinking into your skull slowly. You couldn't let him cum in you. You couldn't let that happen. But you were soooo close. Just a few more moments and you'd have hit your orgasm.