You stare into the mirror, not exactly sure that you are really seeing what you're seeing. Tentatively, your hands go up towards your head, running your fingers through what once was a shoulder length haircut. Only now it's been replaced by a simple buzz. Where once was feminine roundness on your face, there are sharp angular lines. Where once was a small, fairly thin nose, was now a much more prominent, but still angular, one instead. You could still see hints of your features: brown eyes, a sandy brown haircut. It's as if the face looking back at you was what it would have been if...
All of a sudden the realization of what has happened hits you like a ton of bricks. You stagger backwards, nearly tripping over the jeans you were wearing which have now dropped to the floor. Struggling, you pull the now too small shirt off your chest, revealing what you already suspected. Though your bra is still there, it doesn't seem to be holding anything in it. If anything, a pair of fairly large pectoral muscles have replaced your breasts. You take a few more steps towards the mirror after you remove the undergarment. You study every contour of your new male physique, from your broadened shoulders to the faintly defined six-pack abs that you now have. Curious, your larger hands drift downwards to the biggest change, outwardly. Where once a feminine slit stood, now stands a semi-erect five inch dick. You've seen other dicks, in magazines and what have you. But this is the first one you've ever seen up close and personal like. Tentatively you stroke it a couple of times, feeling a pleasure arising from it.
"What the fuc..." your hands immediately cover your mouth, surprised at the deeper voice that you now possess. It's in that moment that you see the cheap ring on your pinky finger, having apparently resized to fit your newly grown hand. Seeing the male and female symbols on the ring, give you an odd clue. "The wish..." you whisper to yourself, looking down at your masculinized body.
A sudden knock at the door distracts you from your musings. "Hey," comes a shout from the other side, "Don't stay in there all day! Some of us need to shower!"
You look into the mirror worried at hearing your brother's voice. Would he recognize you as his brother? Would your parents recognize you? What do you do now?