Dylan slowly felt himself regaining consciousness and moan slightly. The moan seemed higher to him than it should have, but he guessed that it was just because he had been knocked out. He tried to focus, to remember what had happened to him, but his memory was too blurred for him to bring up anything more than Karen showing up in his room. He opened his eyes and saw the ceiling of his room and the fan slowly spinning as his vision came back into focus. He heard a sound from somewhere above and beside him and tried to sit up but an unfamiliar weight on his chest weighed him down.
Dylan looked down to his chest and realized that he had what appeared to be breasts on his chest, "What the he..." he broke off as he realized that his voice was definitely higher. Beginning to grasp what had happened he reached his hand to his new breasts and felt them, really felt them; they were real and a good size too. Fearing what he would find next he reached to his crotch and found, well, nothing.
"Karen! What did you do to me?!" he yelled as he realized that the noise he had been hearing must be his sister on the bed. He heaved his new massive chest up and looked at the person on the bed. Once more, he was stopped in shock to see himself sitting on the bed masturbating, or trying to at least.
"Why are you talking to yourself Karen?" his body asked.
"You know damn well why Karen! Because you did something to steal my body!"
"No, I quite didn't, Karen, you just happened to touch my gloves when you gave me the medallion." The new Dylan smiled a smug little smile. "See I've done a little research while you were, umm... incapacitated and found out that this medallion changes people. Changes them based on the clothing they touch. So, since you touched my clothing you're stuck that way, for at least half a day." He snickered as he kept on stroking his cock. "So, thinking about it, I began experimenting, and since I figured mom and dad can't have two Karens for even a little while. I decided to be you, well, sort of you at least, a few minor modifications here and there and now I'm you, till I want to be me again. But honestly, I kind of like it this way. AND, I think you'll like being me too. Go on, enjoy myself, it's only fair since I took the liberties to enjoy yourself already, though I might try some more later.
Dylan, just comprehending what his sister was saying, kept quiet, thinking. 'She just gave me free rein to do whatever I want as a girl! I admit, I never imagined this happening, never even considered what it would be like to be a girl, but maybe this could be a little fun. Heck, I could even try being a lesbian..." On her face a smile broadened, "Alright DYLAN," emphasizing his name, "I'll agree, but only for a week, ok?"
Dylan thought it through for a second and nodded, "Sounds like a deal to me! Now get out of my room!" He smiled and winked as he began stroking harder. Karen got up and steadied herself, still a bit woozy, and slowly, awkwardly left the room.