Today is a boring day. You don't have work because it's Saturday, and there isn't anything to do, so you just sit on your bed doing nothing.
Suddenly, you get an awful taste in your mouth. Looking at yourself in the mirror, you notice that your mouth is filling with some sort of liquid from your throat. You also notice that you can't breathe from your mouth anymore. As this liquid starts dripping out, the taste of it starts to fade away, and you notice that your tongue has fused to the rest of your mouth. You quickly move into the bathroom and open up the toilet so you don't drip anymore on the carpet. Once the liquid dribbles out of your mouth and into the bowl, your heart races at the sight of yellow filling the toilet. The smell confirms your suspicion; your mouth is leaking piss.
Looking back in the mirror, you notice that your lips look different. Opening your mouth as wide as you can, your teeth are nowhere to be seen, and your lips are getting tighter and tighter, now being forced into a pucker. At this point you can't control your mouth, as it begins to slowly grow out from your mouth in the form of a phallic length. The skin below the formation has already begun to grow and swell, wrinkling up and filling out into a decent ballsack. Your lips finish turning into a now erect, 8 inch long dick, and your mouth is now filled to the brim with urine as it now takes the form of your new bladder. You eventually empty your system, leaving your mouth bladder empty and your cock wanting to be touched.
Your face starts to turn red with blush as you touch this new, sensitive member. You feel excited to try out new things with the cock hanging from your face. If you had a mouth, you would be grinning from ear to ear. Today is no longer a boring day. As you begin to stroke yourself, you begin to feel a new sensation on your original genitals. Taking off your pants, your dick and balls are slowly getting smaller, before completely disappearing from your crotch. Then, your anus begins to move upward, before settling on your crotch.
The changes don't stop there, though. You watch in excitement as you watch your asshole change and morph into your new mouth. Teeth begin to form, a new tongue licks new lips, and last, but not least, a loud moan escapes your new mouth as you climax. Sticky cum explodes from the tip of your face-cock and splatters onto the mirror before dripping down.
After cleaning up your mess, you look back at yourself in a full body mirror. Your face and crotch have deformed into other things, but you feel good about it. You think this day can't get much better, but then you feel a new part of your body begin to change...