Oh yes, I was bi, but I wanted to know how the other half felt. My breasts fell away from my bra, growing back flatter and harder. My bones creaked as I inched upwards, gaining height rapidly. A moan was torn from my mouth as the heat flooded me. Muscle grew all over my body, my biceps and triceps gaining so much size that when I flexed them my petite shirt ripped. I felt the heat racing around my core, where soft belly fat melted away to reveal an eight pack chiseled from marble, as hard as iron. My hands groped every inch of my body, latching on to the new hard lines of my body. I piled on muscle, the floorboards beneath my feet creaking with the added weight. A massive tearing sound came from my skirt as my quads, now massively muscled, ripped through it. The tattered remains of my once favorite skirt fluttered to the ground but I didn't care because I had reached the final part of my transformation. Another massive wave of heat sent me to my knees as it all rushed to my crotch, causing me to throw back my head and moan in pleasure. Finally it inched around my panties, a vein pulsing rapidly along its length. I reached down and ripped off my panties, moaning from the growth. My dick surged forward easily eclipsing 8 inches long and 3 inches in diameter. More veins began to crisscross it as it surged again reaching a foot long.
Glancing at Becky her hands were down her pants, buried in her crotch. The extra sensitivity driving her mad when combined with the sight of my growth. I moaned as I felt the heat coming to an end, but I resisted the urge to grow even more. I slowly slid my hand south, towards the beast now living between my thighs. My chest was heaving, weighted pants being torn from my body from the sensations racking me. The touch of my hand on my abs sent a throb through me, and my dick, partially limp as I recovered snapped to full erection, adding another inch of growth. Instincts taking over my mind I grasped for it with my well muscled hand and felt the power of my throbbing pulse pump in my palm, sending shudders down my spine.
The sensation was too much to handle and I felt an orgasm coming, but instead of the intense warmth and relaxation of my normal orgasm I felt a surge of primal strength, as if I could go hurl a table across the room. Every muscle in my body contracted, flexing to show new size and I felt it welling up inside and race up through my dick. I came thunderously, letting loose a yell. My penis flexed harder then I would have thought possible and then pulsed with my galloping heartbeat. Sperm arced across the room, a truly massive load. Some of it landed on Becky as she climaxed again, unable to contain herself. She stumbled and fell to where you knelt, foot-long dick still throbbing in satisfaction and the warmth sending shivers down your spine.
Becky through her arms around your muscled neck, and whispered in your ears, "Make me as big as you. Please that was the hottest thing I ever seen and I don't think I've ever been this wet before."
I smiled, "I don't know. I have to be careful with this power."
You stand up and...