Amanda took careful aim and, as Melissa and Alan were locked in their embrace, fired a red laser blast of energy into Melissa’s back.

Down on the court Melissa was enjoying her kiss with Alan. She’d had a crush on him for a while and was delighted when he’d agreed to tutor her in tennis, though she knew she didn’t really need any help with form but rather strength training. She was even more delighted when he’d begun making his move. And now that they were kissing she was giddy with so much nervous energy she could hardly stand still. Her entire body felt lighter than air.

The kiss ended and Alan looked into Melissa’s eyes. “Do you want to get out of here and get something to eat?”

“Sure,” she said, smiling. “Let me just get my things together.” She began to put her racket away and gather up a few of the tennis balls laying around when she realized she felt strange. She was still full of energy and really did fell light. For a moment she thought she was becoming light-headed and decided that she’d better check herself out. She excused herself and made her way to the bathroom.

Once inside she went to the sink and splashed some water on her face. Looking in the mirror Melissa decided that she didn’t appear pale or sick, in fact her skin looked as tan a beautiful as ever. She did, however, notice that her shirt, which had been snug this morning, was downright tight now. Looking down at her body she couldn’t help but see that her whole body, usually well toned, was now bordering on muscular. Her shoulders seemed broader and were pulling the buttons of her polo shirt taut. Her forearms seemed a little meatier, and her upper arms were not only thicker, but she could see the outline of a vein beginning to poke out over the top of her biceps.

Checking on the rest of her body Melissa lifted her skirt and examined her thighs. They did look a little bigger, she didn’t think the change was enough for others to notice, but she was very familiar with her legs and the change was obvious to her. To be perfectly honest she was quite pleased. She knew as well as anyone that her legs were spectacular, and her in opinion this additional curve on her thigh was incredibly sexy.

She flexed her right thigh to see just how big a change had occurred and was shocked when her quadriceps exploded out in all directions, quickly inflating well beyond 25” around. Startled Melissa released her flex and stumbled backwards into the opposite wall arms flailing wildly. Her elbow smashed into the tile behind her and smashed a hole right into the tile. Melissa spun and yanked her arm out of the wall and in doing so lost her balance. As she fell to the floor she was just able to grab onto the air dryer hanging from the wall.

She slowly got her feet under her and stood up. Breathing heavily Melissa looked back down at her legs and found them back to normal. Well, their new, only slightly bigger normal. Gone was the enormous, bodybuilder thigh that she thought she saw.

“That was weird,” she said to herself, “I must be tired or something.” But the truth was she still felt totally energized.

Then Melissa caught sight of the air dryer she had grabbed onto during her near fall. On the top of each side, exactly where her hands had been, were deep, finger shaped grooves pressed into the steel. Investigating closer she slid her fingers into the grooves and found that they fit perfectly. A theory began to form in her mind, but it seemed impossible. Deciding to test her idea she pressed her hands into the dryer and with hardly any effort she crushed the top together. Melissa’s heart began racing with excitement as she got a better grip on the already mangled dryer and pulled ripping it completely out of the wall, then continued to crush it until it was compressed into a baseball sized hunk of metal with no effort whatsoever.

“I’m strong!” She exclaimed, glancing back at her reflection in the mirror. She dropped the destroyed dryer and once again lifted her skirt. Once again she flexed her right thigh. And once again it quickly expanded beyond the size her thin limb would suggest, blasting to bodybuilder proportions. Her leg stopped expanding once it reached around 27” around. Melissa released her flex and watched as her enormous muscle shrank back down into her sexy limb. She flexed again and, just like before, watched as her thigh returned to it’s enlarged size. Flexing harder she found her thigh expanded more, this time surpassing 30”. Wondering just how big it would go she squeezed her leg as hard as she could. Veins exploded across the surface of her thigh like a roadmap and her quads expanded until they reached an incredible 46”around.

Melissa ran her hand over the spectacular muscle that had miraculously formed. She couldn’t believe how hard it felt. She tried hammering on it with her knuckles but found no give whatsoever. She felt like she might as well have been hammering on concrete.

Releasing the flex she watched with slight sadness as the muscle, once again, retreated into her leg. Trying the same with her left leg brought about the same result. Next she tried standing on her toes and flexing her calves. Each one transformed into cantaloupe sized balls of power that must have measured 28” around at least.

Melissa then rolled each of her sleeve as high as she could onto her shoulders before raising both of her arms and flexing her biceps for all she was worth. Her arms grew and grew and for a moment Melissa didn’t think they’d ever stop (which she was really okay with) until they finally solidified into watermelon sized guns.

Looking at her reflection in the mirror Melissa couldn’t help but laugh. There was this skinny little blonde girl with a pair of arms bigger than anyone, man or woman, had ever had. The juxtaposition of her thin chest and neck made her monstrous arms look even bigger. She desperately wanted to test her chest and back and see just how big she could get, but she knew her shirt wouldn’t hold together, and she didn’t feel like running out of the bathroom topless.

“I’m sure Alan would love that! Oops, Alan’s still waiting!” Melissa relaxed her arms and watched as they deflated like a pair of balloons. She readjusted her sleeves and went back outside to find Alan again.

“Are you feeling alright?” Alan asked.

“Never better,” Melissa said. “Hey, before we go do you think I could try out some of what you’ve taught me and see if you can return some serves?”

“Sure,” Alan said grabbing his racket and trotting to the far side of the court.

Giddy with excitement Melissa tossed the first ball into the air and gave it a sturdy whack.

“Woah!” Alan said as the ball shot past his faster than he could even react. Looking behind him he saw the ball had poked a hole in the green scrim and embedded itself in the chain link fence that surrounded the tennis court. “How’d you do that?”

“You’re a better teacher than you thought,” Melissa giggled. “Let me try another.”

She fired another serve, this time using a little less power. Alan was able to react and get he racket on the ball, but the force of the ball shot the racket out of his hand. Once he retrieved it he found the strings where the ball had struck were snapped and bent out of place.

“Sorry about that,” Melissa called out across the court, “I’ll buy you a new one! Now clear out of the way, I feel a REAL one coming on.”

Alan quickly moved aside while Melissa wound up and fired with all her might. The ball rocketed off of her racket with such force that upon striking the ground it popped and split in two. Each half, though continued on like rubber shrapnel flying through the chain link fence and cutting a path through the surrounding bushes. Melissa heard the crash of breaking glass and a car alarm sound off from across the street.

A little embarrassed but mostly excited Melissa gathered up her things and walked over to where Alan was standing, and wrapped her arms around his neck. He stood completely motionless in total shock over what he had just witnessed. A passionate kiss from Melissa helped snap him out of his stupor, but he still couldn’t figure out how all that was possible.

“I’m hungry,” Melissa said, “how about that bite you were talking about earlier?”