Right as Amanda was about to fire at her brother, the teen felt a large hand grab her by the wrist and jerk her around. She had no choice but to comply with this physically superior person, as Amanda's entire body did a complete 180 and was soon face to face with her mother.

"Amanda, what the hell are you doing?" Stacy asked, a little upset. "What are you still doing with this gun? You're not five years old anymore."

"I know, mom. But just--"

"I don't want to hear it, Amanda," her mother replied, cutting her off. "Someone your age shouldn't be playing with kiddie toys, anyway." She grabbed the barrel of the gun and tried to pry it away from her daughter. As her meaty hand gripped the gun, she inadvertently switched the gun's settings back to "Muscle Increase."

"No, mom!" Amanda exclaimed, as she had to use both hands to prevent her mother from taking the ray gun away from her.

"You'll get it back this afternoon after school," Stacy said calmly, her daughter's efforts not even causing a strain in her voice, as she slowly brought the gun upwards, not stopping until the barrel was pointed at her chest.

By now, Robert had stopped eating his breakfast and turned around in his chair, watching his mom and his sister struggle for, what appeared to be, a toy.

"I just...have to do...one thing, mom," Amanda said, straining against her mother's superior strength.

Stacy was using one arm to subdue her daughter's feeble struggles in this game of tug of war and even looked a little bored. "Come on, Amanda," her mom said. "You can't win."

Amanda tried to get a better grip on the gun and accidentally pressed the trigger once more. This caused Amanda to let go of the gun and stumble backwards a few steps. The discharge shot directly into Stacy's chest and Amanda watched as her mother grew again.

She watched as her mother swelled before her eyes, every muscle becoming even larger with each passing second. Stacy's shoulders grew to the size of cannonballs, while her breasts inflated larger than Amanda's head, with a powerful shelf of pectorals hidden underneath the soft tissue.

Her arms continued to grow thicker, going from 19" just a few minutes ago, to more than 25" by the time the process was through.

Amanda stared down at her mother's legs and watched as the pants Stacy wore morphed into a pair of short shorts, allowing her now massive leg muscles room to breathe. Her quads and hamstrings were larger than anything Amanda had ever seen. And they were still growing!

Amanda glanced up and saw that the sleeveless blouse had changed into a comfortable pink tank top, with the words, "Muscle, Inc." displayed in bold, red letters. She was also slowly inching upward in height, not stopping until she was a few inches taller than Amanda, eventually stopping at 5'7" or so.

The process stopped the same was as before: with a blue light exploding outward from Stacy's body and continuing out in all directions.

"Like I said, Amanda," her mother said afterward, clutching the gun at her side and acting as if her latest growth spurt had never happened. "You'll get this back after school." She walked upstairs to her bedroom, leaving Amanda flabbergasted at how large her mother had become.

"Damn," Robert said, walking over to the sink and putting his cereal bowl in. "You're still playing with kids' toys, huh? What's wrong with you?"

"Shut up, asshole," Amanda hissed at her brother, as she turned around and made her own breakfast.