Steve's subconscious hunch turned out to be far more accurate than he would have ever believed. As he had watched Melissa walk away from him, with her big ass swinging alluringly in her skin-tight jeans, Steve hadn't been able to avoid thinking that his days of being taller than his stepmother were numbered. In the past few days, he had inexplicably shrunk 5 whole inches, and the more he shrank, the bigger her body looked to him. Even though he had nothing to base his worries on, Steve felt like Melissa was "gaining" on him, and that she would very soon surpass him in height.
'Because she's already got me in size,' he thought, watching her ass bounce up and down, and her hips swivel back and forth, side to side, with each step. Her legs, hips, and ass seemed to fill out every square inch of those jeans. And her breasts...Steve had definitely been noticing them more often. Was it just because he had gotten so much smaller? Or was it perhaps...that Melissa was getting...
No, he wouldn't think about it. It couldn't be. She had taken the same vitamin he had, right? And even though she had administered it to him for the purpose of checking on gender-distinct reactions to the pill, certainly it wouldn't follow that it would make men smaller and women...bigger!? Right!?
A few seconds later, Steve realized that he had been staring at Melissa's retreating ass with his mouth slightly open, and he slammed his jaw shut, blinking his eyes and shaking his head.
'Damn it Steve!' he said to himself, 'Get it together! She just looks bigger because you're smaller -- that's it. That's all. You're ok -- you're in good hands. Just...go relax. Get your mind off all this craziness.'
For the next several hours, Steve did just that, lounging on the couch as he played video games. Melissa was working in her office in the adjacent room, and she popped in every now and then to check on him.
"Oho! Wow!" she exclaimed one time, startling Steve as she stood directly behind the sofa, "That was a nice shot!"
"Heheh, uh...thanks!" he chuckled, settling back in to continue his "Halo" match. "I've gotten so much better at this game recently, so...haha, yeah..."
"So this game takes place in the future?" asked Melissa, bending down next to Steve as she leaned against the sofa. Steve became suddenly aware of her large breasts hanging down the sofa cushions directly to his right. He felt a pink flush rush up into his face. He couldn't help it; he glanced to the side and saw that his stepmother's rack was on full display, hanging down low and heavy in her white top. And...were...were her nipples hard!? Steve felt a sudden lurch in his crotch as he felt himself getting hard too.
"Uhhhh...uh yeah, yeah, in the future," he stammered, turning back to the screen. "In the, um...the 26th century. See, a way, way long time ago, there was this powerful race in the galaxy called the Forerunners, and they fought against these alien parasites called the Flood, and, umm...heheh, well, it's a long story...anyway, haha, science fiction, you know?"
"Huh, I've always thought science fiction was kinda cool," murmured Melissa at his side, "You know, Star Wars and stuff like that."
"Mhmm," said Steve, trying to focus on the game. But the presence of his stepmother's breasts close to his head was a major distraction. It was nothing, though, compared to what happened next. Since he was distracted, Steve had just been shot by an enemy player, causing Melissa to react.
"Awwww no!" she cried, laughing at the same time, "He got you!" In her excitement, Melissa had jostled her body, and her left breast was now smushed up directly against his cheek. Steve's eyes widened and shot downward, directly at the large nipple that was poking conspicuously through the white fabric of her top. The moment seared itself on his mind: the fresh, fruity smell of her organic body wash, the soft fabric against his cheek, and the immense, weighty push of her voluminous breast flesh directly into her cheek, splaying out under his chin and on top of his forehead. And her nipple...there wasn't any question now. It was rock-hard, and far, far bigger than Steve would have expected. It looked like it was about to poke straight through her top.
In this moment, Steve was grateful that his pants were baggier now that he was smaller -- his spontaneous erection had only gotten harder, and his heart had started pounding in his chest.
"Hey I thought you were good at this game!" laughed Melissa, apparently oblivious as she kept staring at the TV. "I'm not distracting you, am I?"
"Uhhhh..." was all Steve could manage, and the silence that followed caused Melissa to look down. Her eyes likewise grew wide, and her mouth opened up in an entertained, apologetic smile.
"Oh my god I totally am," she exhaled, her flesh starting to jiggle with her laughter. She didn't back up immediately, though. Instead, she just kept standing there, in her leaning position, with her tit smushed up against Steve's face. She was enjoying what she saw as the silliness of the situation, but she also seemed to be a bit puzzled, like she was searching for something.
"I didn't...huh, gosh, I didn't even realize I was that...in your face," she muttered, finally backing up off Steve and straightening herself up. She brought her hands up to her breasts and cupped them, bouncing them up and down for herself, like she was testing them for size. Steve couldn't help but watch, slightly mesmerized by the bountiful breast flesh that was suddenly abundantly obvious. Had she changed her top!? Surely they hadn't always looked that big!