"Oooh, you were amazing hun." Jeff suddenly heard coming from his dick, the voice that of his girlfriend.
"Jenny?" he asked, and his dick twitched involuntarily.
"Oh yes. You liked my little transformation show?" His dick was throbbing and twitching as it replied. "What am I saying, of course you did."
"So are you just my large dick now?" Jeff asked. "Or will you change to something else soon?"
The dick bounced up by the question. "Well, I guess I'm technically just your large dick now. No duration, but if you cum three times, I return back to normal. A little backup in case you didn't want to use the program to return me." His girlfriend giggled as she twitched.
"Couldn't I just go and change it so you won't go back to normal?" Jeff asked teasingly.
There was a brief pause in which the dick stopped moving. "Crap, didn't think about that."
Jeff laughed at her response. "Don't worry. I won't change it unless you ask me to." He looked at his erect shaft. "So, you're going back when I cum, huh?"
"That's the plan sexy." she replied.
"So you want me to masturbate, huh?"
His dick started twitching wildly. "Oh yes, Jeff. My entire body is horny, and I want to feel this."
He grabbed his rod, a moan leaving the tip. "So, how is it being my huge cock?"
"It's incredible. My entire body is sensitive, and the helplessness of the entire thing, lacking arms, legs and being unable to move is turning me on."
"So you like being helpless, huh?" He said squeezing his dick tighter.
"Yeeees. Stop teasing and start rubbing me like you were watching the hottest porn on the internet." she replied, another moan drifting from her.
"Well, hope you will like what I have in store afterwards then." Jeff said and started rubbing his dick, making slow deliberate motions to stimulate himself. His girlfriend continued to moan while he slowly was picking up pace, feeling a pressure starting to build up. He had gotten himself up to high speeds as his girlfriend's moans had turned from sensual to lustful, her begging him to go faster and rougher in between her cries of pleasure. His dick started to twitch wildly as a torrent of white sticky cum unleashed, covering the bed sheets.
"Mmmmhm." Jenny purred as she was calming down. "Can't decide between fleshlight or this."
"Guess we have to try again." Jeff said, as he tighten his grip on his dick again.
"No need to hurry." his dick replied. "We have time, and I would also like to get acquainted to this form outside of erection time."
"Okay, if you say so." Jeff said, as he looked at his bed. "Then I will clean up here before I think of moving this to the bathroom."
A quick change of sheets later, Jeff was sitting on the toilet slowly getting his erection back up.
"This feels great. I feel like a balloon getting filled." Jenny was having the time of her life as her body stiffened to once again service Jeff in his sexual endeavors. But just being erect feels better, so no need for downtime between this and the third."
"You in a hurry to return to normal?" Jeff asked, prodding his dick as it finally reached full mast.
"No, but you teased of other helpless transformations, and I want in." The dick was twitching at the prospects of the different ways she would be helplessly bound, unable to do anything except begging for her boyfriend's mercy.
"Well then." With that Jeff grabbed his dick and started pumping, Jenny already moaning in joy as her body started to build up pressure, the pleasuring feeling of her boyfriend's hands rubbing her entire body bringing her closer to orgasm. The movement got faster as he tightened around her, the taste of precum running up her entire insides before a wave of euphoria washed over her as she spat out a large amount of cum. "Oh, how I love this taste." she moaned as Jeff released his grip. "When I return to normal I have to taste some to see if being a dick makes it different."
"Then let me pee, and we can get you back." Jeff said.
"Wait, what?" Jenny reacted as she could feel another pressure build up, and hot steamy liquid rushed out up her body and out her 'mouth'. The taste was strange, but not what she would have imagined. She could live with being turned into a dick again for longer if it wasn't worse than that, or perhaps, just stay as his dick for longer right now. Jeff was in the position to willingly turn her back if she wanted, so why not extend her stay?
"Ready to turn back?" Jeff asked as he started his play to get fully erect again.