"This is what happened," Tim said, raising the ray gun and fired at both girls in quick succession.
"Oh. Fuck. YEAH," Harprer growled as she felt the energy infuse her body, sensing its power and letting it fill her completely.
Her hands moved to her buttocks as she started to swell and grow taller, her jeans protesting as their limit was being exceeded. It didn't take long before her growing thighs, swelling thicker as well as longer, tore open the seams down the sides while her butt started to aggressively swell over her waistband, more and more flesh billowing out as the jeans refused to give any further. As Harper reached six foot her belt burst open with her jeans while her buttocks tore apart the back in a loud, resounding tear, accompanied by a deep, resonant moan from Harper as her butt flesh spilled out, still swelling outward and upward with her body.
Her shirt soon tore apart under the onslaught of her bulging, swelling body and she came to a quivering halt at just over eight feet, a little taller than Tim.
Joanna was quieter, groaning softly as she swelled and bulged against her clothes. Her skirt seemed to get smaller and smaller as she grew bigger, her widening hips and swelling buttocks finally conquering it when she reached six-foot five, while her breasts surged forward, determined to outdo any other part of her body as they burst the buttons off of her blouse. Joanna ended up taller than Harper, but was still slimmer, at nine feet.
Harper strode forward, gripped the gun in Tim's hand, turned it towards him and fired a brief shot. Tim grunted in surprise as he grew another foot, his long-suffering clothes finally surrendering and leaving him completely naked, his throbbing cock resting against Harper's soft, damp flesh.
"Oh yeah," Harper sighed, licking her lips, pushing Tim to the ground.
The enormous teen wasted no time and proceeded to straddle him, Tim's cock slipping into her hot cunt. Both of them groaned and grunted as Harper began to ride him, Tim clutching at her ample backside as his mind was lost in the ecstasy. After only a few thrusts from Harper Tim felt his climax approaching, though he sensed it was different.
"H-Harper!" He managed to groan. "I-I'm going to cum!"
"Yes! Harper grunted in response, increasing her tempo. "Give it all to me!"
Tim released a strangled cry as he erupted, thrusting his hips hard against Harper's while the teen screamed at her own release, her pussy juices spraying around Tim's cock as long bursts of cum flowed from his penis and deep into Harper. Tim's hips kept twitching with every new burst, both of their orgasms lasting a full minute before they collapsed to the ground in a combined sweaty heap.
While all this had been going on Joanna had licked her lips as she approached Dylan, who looked up at the massive girl with a little fear and a lot of arousal. She slowly knelt down and lowered herself until her face was level with Dylan's and gently began tearing apart his ruined shorts and underwear. Dylan was lost in her dark green eyes.
"Have you ever cum before?" She asked softly as her hands closed around his dick and Dylan shook his head, groaning at the sensation.
"Well, then," Joanna said with a smile. "Let's change that."
She gave his cock a few strokes to bring it to its full erection and then gently wrapped her massive tits around it, her breast flesh completely enveloping Dylan's member, even at his increased size. Dylan moaned softly and reached out, gripping the soft, warm breasts that had swallowed his cock and Joanna sighed with pleasure.
"That's it," she whispered as Dylan began to thrust his hips against them, following his instincts. "Cum for me."
She started to massage her breasts against Dylan's cock with his motions and after several more thrusts Dylan cried out, thick ropes of cum erupting from his cock deep between Joanna's breasts. His eyes rolled back as the ecstasy consumed his mind for a short time, his release lasting a minute or so.
A good half hour passed following their brief sexual experimentation as they basked in the afterglow of their release, Harper on top of Tim and Joanna beside Dylan, all lying in the grass. After a while Tim stirred and sat up, Harper no longer on top of him. He looked around to find..