Remain in her underwear

Original Author: OddShipper

Deciding she would rather relax and lounge around in her underwear, Kim made for the living room, before plopping down on the couch. The motion would've thrown you in the air were you not buried under her cock. Instead, it just jostled you around, and **** you between her scrotum and shaft. Your older sister felt your movement, but was unaware that something was even in her underwear, let alone that her little brother was shrunken and trapped by her manhood. So, she merely rubbed her crotch, seeing as no one else was home, and reopened her book to read.

You, meanwhile, were now imprisoned in almost udder darkness under the significant weight of your sister's package. It would have been difficult to move before, but now with your back pinned to Kim's balls, which were each larger than you, it was next to impossible. As the minutes ticked by you began to become extremely hot. Your sister's body produced so much warmth compared to you now, but especially her genitals. What was more, you could've sworn the massive cock pinning you was growing heavier. Then it hit you out of nowhere! The reason it was so hot was that Kim was turned on by something, and her dick was quickly growing back to its truly impressive full size.

Little did you know, the book Kim was reading was a rather raunchy romance novel, and she was at a particularly enjoyable scene. In a paranoid manner, the geeky teen looked around, before reaching for her panties.