As she continued to pleasure herself, Jen didn't notice the tingling sensation centered around her ass. Blinded by the ecstasy she was applying to her pussy, she didn't feel the tugging coming from her ass. The tugging increased until it became a pulling sensation and something had begun to appear from within her anus.
It looked as though she were just using the bathroom, but if someone looked closer they would say otherwise. It was a brown and oblong like tube that was currently 4 inches long, and 2 inches thick. As Jen continued to masturbate, oblivious to her transformation, the tube like structure continued to grow out of her ass.
Continuing its growth, the tube was slowing down its after 45 minutes of Jen masturbating it stopped and revealed itself to be a cockroach's abdomen that was 5 feet long, and 2 feet wide.
Because of its length it made Jen lean forward
slightly, not that she really noticed as she
continued to stimulate her vagina. After a couple more minutes Jen reached her climax and moaned in pleasure.
Her transformation now complete, she regains focus and is now aware of her surroundings. "Wow," Jen says. "I don't know what came over me, but that was amazing. Way better than what my boyfriend has done before. " As she reached down to grab her close she felt a strange weight on her ass. It was something that she'd never experienced before.
Curious, she craned her neck to look behind her. What she sees shocks her to her very core. Sticking out of her ass was a giant cockroach abdomen. Unable to form a sentence, she just stares, flabbergasted as her mind tries to comprehend what she was looking at.
"I-what...what happened to me!?"