"What is all the racket in here?", came the voice of Robert and Amanda's mother as she entered the room to check on all the noise her children were making. She stopped in shock at the sight of the titanic woman with her son's girlfriends face holding aloft a behemoth of a man with her sons face in one hand and about to shoot her with a gun in the other.

As the beam from the gun struck her Stacy gasped as the wind was knocked out of her and then moaned as pleasure shot through every nerve ending in her entire body. The feeling of power washing through her was incredibly intense. And overcame her senses - her eyes shut, her ears filled with a rhytmic thudding,

Before the eyes of the three startled young people Stacy's body grew - rapidly. She overcame the height of her son in a matter of seconds, seconds later she had surpassed the height of Jess. As the pleasure made her weak in the knees she dropped to a kneeling position, sitting back on her heels and Jess noted she was still almost as tall as her in that position when the growth slowed to a stop.

Then came the muscles - her arms, already massive from her increased size - began to build with muscle. All traces of fat on her body disintegrated into firm, might packed meat. Even her breasts, which were swelling larger right on pace with her muscles seemed to be made of densely packed, though pleasingly curved and smooth, muscle.

Stacy's unflexed bicep was as big as Jess's thigh - each leg bigger than the younger girls chest. The three teens spent almost as much time recovering from their awe as Stacy did recovering from her change. As sense of reason returned to the room the gun was now firmly in the hands of