The gun hummed and vibrated in Stacys hand. A green light grew blindingly bright until a ball of lightning flew from the barrel and slammed into Amandas body. Amanda screamed and fell back against the wall. Stacy screamed herself as Amanda slumped downward till she was sitting, held up only by the wall. Stacy dropped the gun and ran to Amandas side.

"Oh my God honey, are you ok? Speak to me." Stacy shook Amanda and there was no reaction, Amandas head rolled loosely on the end of her neck. Her eyes were half open and they spun, glassy and unfocused despite Stacy snapping her fingers in front of her daughters face. "Amanda! Amanda!"

Stacy put her hand over Amandas chest, feeling for a heart beat. A large red welt was on her chest, right between her breasts and the edges of her bra were smoldering. After a couple of seconds Stacy finally felt the beating of Amandas heart, it was irregular at first but then came through stronger and steadier. Amanda began coughing and leaned forward clutching her stomach. Her body began quivering and thrashing like she was being electrocuted. The fit lasted almost a full minute before it finally subsided and Amanda rose shakily to her feet with her mothers help.

"Jesus," Stacy fumed. "I can't believe I let you talk me into that. That thing could have killed you. I don't care what it is or what it's supposed to do but I'm getting rid of it.

Amanda gasped, still trying to catch her breath. "I don't understand it," she said finally. "It worked before." Suddenly Amanda pitched forward again, clutching her stomach and gasping. "AAHHH!"

"Amanda!" Stacy put her arms around her daughter before she pitched forward onto the floor. Amandas body was slick with sweat and Stacy struggled to keep her from falling. She was heavier than she looked. Finally Amanda seemed to be able to stand, mostly unassisted. "Amanda what's wrong?"

Amanda couldn't seem to answer. She stood there leaning forward, one hand on her knee holding herself up, the other clutched against her stomach. Her hair hung down over her face and her breath came in deep panting gasps.

"Honey?" Stacy had her hand on Amandas shoulder as she leaned down, trying to peer through her daughters curtain of hair at her face. "Honey, how do you feel now?" Sweat dripped from Amandas hair and she continued to breathe in that rasping gasp.

"Fine," the word was almost impossible to distinguish from the gasps of breath.

"Fine? How can you feel..." Stacy's voice trailed off as she felt something strange happening under her hand. Stacy slowly stood up and her eyes verified what her hand was feeling. The muscles in her daughter back were growing. At first it was easier to feel than it was to see. The changes started subtly. The muscle thickened a little, then a little more. Amandas shoulders were slowly growing wider, the deltoids growing more and more pronounced. The muscle groups in the back became more visible as they simultaneously grew larger and Amandas body fat seemed to melt away. The arm that Amanda was supporting herself with grew thicker. Veins began to protrude visibly, her forearm swelling dramatically. The horseshoe shape of her tricep went from being slightly noticeable to impossible to ignore. The muscle continued to swell, pushing out from her upper arm like a shelf.

The loud pop of a tearing seam drew Stacy's attention down to Amandas ass where the muscles were outgrowing her jeans. The seam had split right in between her butt cheeks and the tear continued to grow wider as the glutes continued to get rounder and fuller. Amandas breath was still coming in gasps as more and more cloth succumbed to her expanding body. Her back widened and her bra split with the loud crack of tortured elastic. The seams of her jeans tore apart along her thighs and then her calves. Still she continued to grow. Amanda slowly straightened up and Stacy backed away, literally in awe of her daughter physique. She was almost afraid to see Amanda turn around.

"Honey?" Stacy's voice was little more than a whisper.

"I said I'm fine mom." Amandas back muscles twitched and jumped, her lats flaring and relaxing as her weight shifted. Stacy hadn't even realized there WERE that many muscles in someone's back. Amandas massive back spread upward and outward, emphasized by the immense delts. Amanda brushed her hair back over her shoulder, obscuring some of the girth her trapezius and neck had gained and giving Stacy a glimpse of her bicep, momentarily tensed and its peak, that made her knees weak. Amandas arms were so thick they didn't seem to hang straight at her sides unless she exerted effort. Regardless of the reason Amandas muscles were constantly at motion, the slightest movement made them stand out, each muscle group drawing Stacy's attention as she realized she was not just looking at her daughter, she was checking her out and feeling turned on. "That could be me," she thought to herself over and over again. "It would be so easy."

Stacy's eyes followed Amandas back down to where it narrowed, seemingly impossibly narrow, to a trim tight waist. The waist gave way to wide shapely hips and that ass... "These really aren't doing much good." As though reading her mothers mind Amanda hooked her thumb into the impossibly tight waistband of her pants and pulled, tearing the shredded remnants completely from her body and throwing them aside.

Stacy gasped at the rock hard and shapely ass that was revealed, Amandas panties pulled tight in between the cheeks like a thong. The way the thighs flared outward, then the calves. Stacy eyes began travelling up her daughters body again as her mind kept repeating, "I could have a body like that. I WANT a body like that."

Amanda began to turn around to face her mother and Stacy gasped again at the sight of Amandas profile. The rock hard slim stomach was so narrow, it couldn't possibly be that size and support a body that heavily muscled could it? But it obviously was, the abs looked like they were etched in steel and then Stacy could only seem to see Amandas breasts. Protruding far out from her body Stacy could only guess at the cup size. They were high with surprsingly little sag given their size, and they jiggled as Amanda turned. The nipples stuck out from large, round areolas only a few shades darker than Amandas lightly tanned skin.

Amanda slowly raised her right arm up and flexed her bicep hard, the peak rising up higher and higher until it stood quivering. "That should do it. I'm easily bigger than Robert now. Thanks mom." Amanda gave her mother a peck on the forehead and walked out of the room as though it was perfectly normal to be bigger than most male bodybuilders with tits like a porn star and only wearing her panties.

Stacy shook her head and looked around the room. She only had one thought right now and that was to be just as big and sexy as her daughter... well maybe a LITTLE bigger.

But where was that gun?