Giving In

My friend Caleb warned me the day we became roommates about his magic penis.

"Just be careful not to walk in on me in the shower or something, the more you look at my dick, the more feminine you'll become," he said, gravely serious.

"Okay sure, whatever you say dude," I rolled my eyes, thinking he was joking. A few days later I got home early and barged into the bathroom, unaware that he was about to take a leak, his cock in hand. It was pretty massive.

"Close the door, NOW!" He yelled.

I gulped, for some reason I found his cock fascinating. I felt strange. Sure enough, I looked in the mirror and noticed that all my facial hair was gone, my eyes seemed a bit larger, and were my lips that full before? He wasn't lying, he really did have a magic penis. I couldn't stop thinking about that dick, so big and beautiful. Oh god, was this what it was like to be under a spell? Over the next few months I arranged for a few quick "accidents" barging into his room, or peaking into the shower so that I could get a glimpse of his tool. My hair was down to my shoulders now, my face was pretty and soft, with lips perfect for sucking cock. His cock. I still dressed like a guy, but my penis was barely there anymore, a small nub swiftly retreating under what would become my clitoral hood. I needed more.
A few days later the perfect opportunity presented itself. He was in his room, and I could tell by the silence that he was probably watching porn. I walked right in, pretending to ask a question about the dishes.

"Caleb, do you know wher-...oh." His magic cock was fully erect, my eyes glued to his glorious manhood. I could already feel my new vagina becoming fully formed, my nipples hardening in preperation for the swelling to come. I got on my knees in front of him, revelling in the accelerating changes. Expertly stroking his cock, I said two words:

"Fuck me."

I'm such a slut for his cock. We have sex all the time now, and I'm just so grateful for having a roommate with a magical penis.