"Oh great! This is just great!" Arnold paced back and forth in Amanda's room, clearly agitated. He looked like Russell Crowe's character in "A Beautiful Mind", except with about 400 pounds of extra muscle.

"Just awesome, I mean not only do I ruin my game and my clothes, I'm going to have nothing to show for it at all. Meanwhile, you are getting all the benefits! It's just not fair!"

He was interrupted by the ripping sound as Amanda's thighs outgrew her pants. Tight, corded legs poked through the ripped fabric.

As Arnold went back to pacing, Amanda was lost in her own world. The tingle she'd felt earlier had grown almost orgasmic, and she her whole body singing as she ran one hand over her rock hard six-pack. She arched her back and moaned in pleasure as she lifted it to cup one of her rapidly growing breasts under the tattered remains of her t-shirt.

After what felt like an eternity of mind-numbing pleasure, Amanda slowly came back to her senses to see Arnold still pacing and mumbling in front of her. He was smaller now, but still big enough to make Mr. Olympia jealous. She found it hard to turn her gaze away from Arnold's Olympian physique, but she looked down at her own body, which was even more spectacular. She was about as muscular as Arnold, but it looked a lot different on her. Instead of blocky and masculine, her physique flowed sensuously around intensely feminine curves. She was a few inches shorted than Arnold, she noticed with a little disappointment, but then she had been when this whole thing started.

"Arnold?"

She called out but it didn't seem to break his preoccupation with his own thoughts, as he mumbled,

"...and I'm going to get grounded, and how am I going to adjust the power supply differential when I can't leave my room, I mean..."

"ARNOLD!"

She put a hand on his shoulder and shook him gently, breaking him out of his trance. He turned and started at her, stunned.

"Arnold, I think it stopped. I'm not getting any bigger and I don't think you're getting any smaller."

"What? How can that be? We should both shrink down now and ... unless.." A big smile broke out over Arnold's face.

"Amanda, you're a genius!" He grabbed her by both her massive shoulders and gave her a quick kiss.

"I am?" she replied, surprised by the kiss. "What did I do?"

"Don't you see? Look, think about the leaky balloon again. The gun is like a pump, it fills the balloon taking life energy from the surroundings. But the balloon leaks, so once you stop the pump, the energy leaks out back where it came from. But what if, what if you took the balloon and covered the hole in it with another balloon? Then the leaking balloon would inflate the other one until they were both the same size! Wouldn't it? I mean, it would, wouldn't it? Let's see, the pressure differential between the two would force the smaller one to inflate, but would it be able to overcome the elastic forces keeping..."

"Arnold! Just... forget I asked. Look, this life energy that the gun transferred, its not must height and muscle is it? I mean, these," she put her hands under her now massive breasts and lifted them gently.

"Well, they aren't exactly muscle, are they?"

Strangely, Amanda didn't feel the least bit self conscious to be fondling her breasts in front of Arnold. In fact, she kind of wanted to show them off.

"What?" he replied, suddenly very distracted by Amanda's attributes. "No, well not entirely. I tuned the gun to manifest the energy transfer mostly through muscle and height, but you really get the full life energy package transferred. Increased strength, vitality, endurance, sexual characteristics and sexual energy, even intelligence should also occur. But it took a lot of effort to channel it so that the energy mostly manifested itself as muscle, I had to target the frequency to protein receptors in..."

Amanda held up a hand to stop him. "Vitality, sexual energy. I see. I guess what I really want to ask you is, are you feeling as horny as I am right now?"

Arnold smiled a crooked half-smile and managed to force out the word, "More" with a cracking voice.

Amanda beamed a bright smile back at Arnold before grabbing him around the waist with one powerful arm and half throwing/half tackling her partner onto her bed. This time the bed wasn't up to the impact of the two colossal teens, and the legs collapsed with a loud crash. Neither of the two lovers noticed as they began exploring each others new bodies.