Having sex!

Original Author: Chaos Magnet

The loud thump of your sister's heartbeat was almost deafening as more and more blood rushed to you location. Obviously, something had aroused Kim, and, while it may be in an unappealing manner, it may prove to be the means of your escape. You could only hope that this would finish with you being propelled from you sister's unexplained genitals, and back out to freedom.

Your hopes of escape began to grow as you felt something fondling your prison in a very sensual way. At first, you thought it was Kim playing with her sack while jerking off, but that theory went out the window when you began to hear a loud moaning coming from just outside her balls. It was far to loud to be your sister, as it sounded like whatever was making the noise was pressed right up against her balls.

Cum began to churn and the temperature skyrocketed. You were unable to stay in one place, as the swirling, unspent load twisted and swelled in your sister's ball. If she didn't cum soon, you were sure that you would drown in the thick cream. The walls began to close in like a deathtrap, and what little space you had before was gone. You were certain that **** was imminent when a great surge pushed you into the widening tube which you had entered. In seconds you were propelled out and onto a warm surface, dazed.

After a few minutes, you regained enough of your senses to hear your sister, and her partner.

"That...was...awesome!" your sister praised.

"I'm just getting started." said a very familiar voice.