"Science is risk," Ethan thought. Taking the injector, he now plunged it into his neck before scooping the 18 year old off her feet.
"Ethan!"
Ethan gazed down hungrily at the teenage Melissa. The regression had left her blouse rumpled, her bra strap loose. The girls clothing perhaps a bit ill fitting for her lean and muscular young body. Kissing the girl passionately, he listened to her release an audible sigh. Laying her down on the lab table, he now gently held the girl down. "Why Ethan," the girl replied coyly. "Whatever shall you do?"
"You'll see," he grinned as he crawled on top of her. Already he could feel the serum taking affect. The feeling was intoxicating, his body felt as if it was being massaged by sensual oils. Melissa reached upwards, unbuttoning his shirt, her eyes going wide at Ethans barrel chest.
Ethan had always kept his body hair well kept. Melissa's delicate fingers now began intwining themselves in his hair as she traced his massive muscles. "Ethan," she whispered. "I had no idea you were so BIG!"
Ethan simply smirked, laying passionate kiss on Melissa's lips. His body felt electric, he could almost feel his testosterone racing through his bloodstream. He couldn't be sure but he believed himself to be closer to his mid thirties now. Ethan pants felt a bit loose while the couple of greys he had noticed on his chest appeared to have vanished.
With one hand he now reached down, opening Melissa's blouse with one hand. The teen gasped before biting her lip in anticipation. Ethan simply marveled at Melissa's lithe form, a flat toned stomach and breasts that were incredibly firm inside a slightly roomy bra. "Take me," she whispered as she nibbled on Ethan ear.
Ethan grunted, kissing Melissa's neck as the teenage girl moaned. Both of their hormones were racing at this point. Ethans nose twitched as he could smell Melissa's obvious arousal. Moving his hand downwards, he now jerked her skirt to her knees, along with her pantyhose. Shaking himself from his stupor he could see a visible wet spot on her panties.
As Ethan was removing Melissa's skirt, she was now looking to unbuckle his pants. Quickly she now undid his belt, noticing the sizable bulge. "I never had one THAT big before," she thought lustfully. Unzipping his pants Melissa now freed the beast, her eyes growing wide at Ethan massive manhood.
"Ethan," she purred, her eyes wide in astonishment. Gazing at the man she could see he looked closer to 29 now. The man's muscle still massive yet more toned. Ethan body hair also appeared a tad thinner, which only seemed to accentuate his chiseled physique. Gazing at Ethan, Melissa felt almost naughty, a mischievous thought now forming in her head.
"Ethan," she purred, batting her eyes innocently. "I've never been with a man before, only boys. Show me what a man can do."
Ethan chuckled, appreciating Melissa's attempted roll play at being a naive young school girl. "I'll show you what a man can do Missy."
Stradling Melissa he listened as she gave an audible gasp. Ethan now reached down, inching her panties down and exposing her obviously wet nether lips. "My, my, my," Ethan grinned. "Someone's excited."
Melissa moaned, biting her lip as she gazed hungrily at Ethan. She desperately wanted to feel him inside her. Ethan now positioned himself, grunting as he now penetrated Melissa.
Melissa's eyes went wide, a loud gasp escaping her lips. Ethan was HUGE. Not only was he huge, she was smaller, her regressed vagina not used to intercourse. It made sense as Melissa thought about it, she had been 17 when she lost her virginity. Now though she felt close to bursting as Ethans massive member began to thrust, slamming into her cervix.
The two lovers now moaned, Ethans a deep male groan that was rising in pitch as he regressed. Melissa's, high and girlish, sounding every bit the teen she had been transformed into. Gazing up at Ethan she felt her mind fogging with lust. "He looks like a college kid," she thought.
A now 22 year old Ethan now vigorously thrust, the 18 year old Melissa's hips bucking in rhythm with his menstruation. To any outsiders it looked like two college lovers had snuck into the lab to have sex.
"Ahh, Ethan," Melissa moaned. "Dont stop, don't stop, I'm, mmmhm, ahhh!"
Melissa's moans were growing louder, higher in pitch as Ethan reached a hand around, grasping her firm ass. The teenage Melissa was close to organize now, (Ethan too could feel his own climax fast approaching). Lifting the girls leg in the air, Ethan now tore her panty hose away as he held her leg over his head, the teenage girls toes curling in ecstacy.
With a final push the now teenage couple climaxed. Ethan grunted ejecting his seed into Melissa. Melissa screamed in ecstacy, the girl riding waves of pleasure as she orgasmed. As the now found herself coming down she gazed into Ethans face. "You're young."
Ethan was indeed young, an 18 year old man. Still incredibly muscled, he examined himself closely. While his muscles may have thinned slightly, they were still quite large, as well as quite defined. Looking himself over he could see his body hair had thinned slightly, while his face had rounded off. He would definitely pass for a teenager now. Gazing down at Melissa he smirked. "So are you," he smiled. "I'd say your closer to 17 than 18."
An odd look now crossed Melissa's face as she looked herself over in the mirror. It was true, she did look a bit younger. The teens face had rounded slightly, her nose more upturned while her breasts appeared slightly smaller while being a bit perkier. She now looked like a high school student instead of a girl in college.
"Huh 17," she smirked. Jumping off the table Melissa took in her appearance. Her body was fantastic, she would say every teenage girls dream. "I think I could get used to this."
Approaching Ethan she now stood on her toes, giving the massive 18 year old a passionate kiss. "We have to do this again sometime," she purred. Ethan nodded as the two began to dress. For Melissa though she now found herself with options, be the older girlfriend of a 16 year old Carl or the younger girlfriend of an 18 year old Ethan.