Good son: swallow the pill
From Create Your Own Story
You swallow the pill. Nothing really happens for a few seconds until the world gets black around you all of a sudden...
You awake some time later on a bed feeling weird. Your head hurts. You look at the ceiling and because of a mirror up there look right back at you. Your face looks kinda weird. You are a lot more feminine. You can feel you are naked underneath the blanket. You quickly remove it and see your whole body now.
You grew tits, each supporting one 0.2-inch perky nipple. You could easily fill a D-cup bra. Your penis is gone too. You got completely turned into a girl.
The weird doctor comes back inside the room: "Ah good you are awake! Don´t worry about it. The effect will only last about 2 days. You will turn back into a boy when the time is up. The only thing you gotta remember is to not get pregnant. Because if you get pregnant, you won´t turn back into a boy. Understand? How do you feel?"