This choice: Justin and Amanda go further • Go Back...Chapter #4Justin and Amanda go further by: Exccidex   Justin felt the warmth spread through his body again, and he knew his growth was not complete. His body began bulging in all directions, growing his massive pecs, biceps, abs and legs.
However the most growth was reserved for his cock. It strained against his underwear as his members grew. Then, with a primal roar Justin leaned back and his cock ripped through his underwear, fully erect. Justin now bore a 18 inch throbbing hard cock with huge balls full of cum. He stood in the lab flexing his fully nude muscular form and his huge erect cock.
Amanda watched Justin with lust in her eyes. Moaning, she said “Justin that was the hottest thing I’ve ever seen in my life. Come over here and fuck me RIGHT NOW!”
As she said this Amanda felt herself grow as well. Her massive tits, which were already H cup, began to grow even more now. The rest of her body gained more muscle as well. Biting the bullet, Amanda ripped off her shirt, exposing her ginormous breasts. Her nipples stood fully erect and they even began to lactate. Her monstrous legs grew even more as the tore up the last remnants of Amanda’s shorts, fully exposing her gloriously feminine and muscular body to the world. She moaned with ecstasy as she fondled her new huge boobs.
Upon seeing Amanda’s transformation Justin’s eyes filled with a primal lust that filled his mind with one desire: to fuck Amanda hard.
With a primal moan he forced himself upon Amanda, his huge cock penetrating her pussy with perfect precision. Justin repeatedly thrusted, using his new muscles to their fullest potential. The two of them moaned in absolute pleasure, fondling each others muscles as Justin kept pounding.
”OH MY GOD, ITS SO BIG JUSTIN! SO BIG” Amanda’s cries fueled Justins desire for more.
Eventually Justin’s lips found their ways to Amanda’s huge tits. They were leaking milk by now, and Justin happily licked her huge breasts dry. As her boobs were super sensitive, this action made Amanda throw her head back and scream in pleasure.
“Oh, Justin, FUCK THIS IS AWESOME!”
Still thrusting, Justin said, “I want to keep doing this forever!”
As Justin approached his climax, Amanda yelled, “Don’t pull out, Justin. GIVE ME ALL YOUR CUM!”
Faithfully obeying, Justin thrusted as hard as his huge muscles would all. Finally orgasming, their moans reached a fever pitch as Justin’s balls released a mountain of cum. Pure ecstasy enveloped the two of them.
Eventually Amanda’s pussy was full, so Justin pulled out his still hard cock and came all over Amanda’s rock hard 8 pack abs and huge sensitive tits. Justin’s balls squeezed out more cum, covering Amanda’s muscular rock hard body.
“Justin that was amazing,” Amanda moaned, licking up some of the cum off of her glistening huge boobs.
Justin looked down. His cock was still rock hard, seemingly having grown to over 2 feet. His muscles were still growing, and the desire to breed still filled him.
Looking over at Amanda’s cum covered Amazonian body, he said “Ready to go again?”
There was a knock at the bio lab door.  indicates the next chapter needs to be written. |
| Members who added to this interactive story also contributed to these: |
<<-- Previous · Outline  · Recent Additions © Copyright 2025 Exccidex (UN: exccidexx at Writing.Com). All rights reserved.
MossyA has granted Writing.Com, its affiliates and syndicates non-exclusive rights to display this work within this interactive story. Poster accepts all responsibility, legal and otherwise, for the content uploaded, submitted to and posted on Writing.Com. |
View Portfolio
Visit Notebook
Send Gift Points
Awards
Badges
Send Email
Community Newsfeed
General Discussion
Sponsored Items
Book of Trinkets
Static Items
Books
Groups
Interactive Stories
Audio
Campfire Creatives
Community Notes
Crossword Puzzles
Documents
Folders
Images
In & Outs
Madlibs
Photo Albums
Polls
Product Reviews
Quizzes
Survey Forms
Web Pages
Word Searches
More by this author