After a few minutes of uncomfortable shifting in their seats, Marcus and Shauna finally look at each other. Shauna breaks the silence first.
“Alright enough, I can’t take this anymore!” Marcus stops the truck and pulls over, the road is just as abandoned as the gas station.
“What’s wrong babe?”
“I’m soaked and turned on, I need to fuck Marcus. I don’t care what happens, I need you right now.” She grabs him by the shirt and reaches for his dick. Even in his human form, he was surprisingly well-endowed.
“A-a-are you sure babe? Right now!?” She keeps him from saying anything more by locking lips with him as she pulls her pants down. “Let’s take this to the back.”
Marcus opened the back of the moving truck and turned on a lantern before shutting the door behind them. They finished stripping and began to make out, Shauna grinding her pussy across Marcus’ dick. He could feel himself change, and she was more than ready for it. His face pushed out a little bit, causing her to move her face so they could keep their kiss going. They finally broke their kiss as Marcus began to grow fur and fat, his more ursine body now coming in. His dick grew a few more inches and thickened out a bit. His balls swelled up and drooped down to just above his knees. They looked swollen despite him releasing some pressure earlier. He had to growl as he finished his transformation, like a person yawning after a good nap. The more meaty, muscular bear Marcus pinned Shauna down as his girthy cock laid across her stomach and chest, reaching up to her breasts.
“You sure about this, it might hurt at first?” He didn’t even get an answer as she eased the first part of his cock into her vagina, causing him to moan a little. Shauna didn’t want to admit she was being overzealous, it was a LOT of cock. His cock in his werebear form was bigger than any dildo she had ever seen or used. Not to mention his knot wasn’t exposed yet. It started out traditional, then rhythmically moving their hips as his cock stretched her out, her orgasming a few times in the process. Once Marcus’ knot got exposed, it was all instinct from there. He flipped Shauna over and plunged his entire length in her ass, knotting her in the process. She squealed in pain at the sudden movement, but she was still extremely turned on. A few more thrusts and Marcus dumped all the cum into Shauna’s ass, biting her neck and feeling his head clear up as he relieved himself. Shauna, on the other hand, was beginning to feel all new feelings as her transformation started.
Her gaped orifices started to close up, but stretched out as if it were natural for her to fit Marcus’ cock in her holes. Marcus unknotted her and with a wet “splorch” sound, her asshole became a more of a donut. While she never had body hair prominently on her body, the thin hairs she did have became dense as her hair turned to a fur pelt. The cum that sat inside her started to stretch out her organs, causing her to bloat with fat. Her body became massive as she grew and grew, easy doubling her previous size and matching Marcus’ size. While Marcus was a brown bear, Shauna took on more black fur than brown. Her face stretched out slightly as she gained a more ursine muzzle, her hands growing massive and meaty like that of obese human. Her ass ballooned out to match her super wide hips and thunder thighs. Her feet became bear paws that matched her hands. With a little nub of a tail finishing out her transformation, she tried to stand up, realizing how much weight she had gained in her transformation. She looked back at her fiancé, who was eyeing her up with an even more intense lust. At least he thought she was still sexy.
“Well, how do I look?”
“Ready for round 2.”
“You’re such a nerd. Do you have a mirror or a camera?”
“Sure, I doubt you’ll be able to see your entire body in your reflection. I might’ve made a mistake letting go in your ass.”
He moved the furniture around to find a full length mirror, leaning it against the wall of the truck. Shauna had to move back a decent ways to see how wide she had gotten, but she was not displeased with the results. She was a bottom heavy bear goddess with lusciously plump thighs, question-mark ass, flared out hips, and perky milk bags for tits. Even though she had a gut, it made her look more real, not like a fake bimbo with implants. She wagged her nubby tail in excitement as she gave Marcus a literal bear hug, feeling his dick pressed between their guts.