Robert was so lost in the sight of Jess's enlarged breasts that he hadn't noticed that Jess's right arm was no longer clutching his back. Instead, with the gun firmly in her hand, she set it for muscle growth and aimed carefully at her arm, which she held several inches above Robert's back as her left hand alternatively squeezed and stroked him.

Robert was always pretty quick in bed, usually lasting no more than two minutes. That was far too quick for Jess to come, but would still be much longer than they'd used the gun on either of them so far. She had seen what a short blast of the gun at 10 feet had already done for Robert and for herself. But what about a long, concentrated blast at close range?

She fired, keeping the trigger pressed hard as she maintained a steady stream of encouraging noises, moaning with pleasure and begging him to hold out just a little longer. The energy from the gun quickly built up inside her, although as long as she was firing the gun it was having no effect on her muscle, as though the energy was held in suspension until the build-up was complete. Still, it was making her tingle more and more strongly. In fact, combined with Robert's thrusting, she was actually getting closer to coming than she ever had before with her selfish boyfriend. But she resisted giving in to the feelings, instead concentrating on keeping her finger on the trigger, on keeping the gun aimed at herself, and on making Robert last as long as possible.

Predictably, after nearly five minutes, it was Robert who yielded first. With one final mighty thrust, he pushed himself as far as possible into his voluptuous girlfriend and came in a flood. As she usually did, Jess pretended to come at the same time, but still she managed to keep her hand steady and her forefinger on the trigger. The energy was almost overwhelming. How much longer could she stand it?

She didn't have a chance to find out. Although Robert was beginning to settle into a post-coital haze, he noticed that Jess wasn't snuggling against him as she usually did. Instead, she was holding her body rigid. He turned slightly to see what she was up to and saw to his shock she was firing the gun into her arm.

"Wh-what the fuck are you doing?" he said, his mood quickly changing from contentment to fury. He knocked the gun out of Jess's hand, sending it across the room, and stared down at her angrily. "I can't believe you did that!". He lifted his hand, wanting to hit her.

Jess looked up at him. Her first reaction was fear. She wanted to get away, but with Robert's full weight on her body, she couldn't get up quickly. Then she felt the beam's energy spreading throughout her muscles as it had before, but hundreds of times more intensely. She felt a twinge of fear that perhaps she had overdone it, but then decided it was too late to worry. It was time just to see what would happen.

In any case, if Robert did anything to hurt her, HE would be the one in trouble!