"NO", you shout defiantly. "I WON'T DO IT. AND YOU CAN'T MAKE ME. I'M A HUMAN BEING, YOUR SON. I'M NOT A SEX TOY!".
"You stopped being human, and our son, the moment the alien shrank you", your dad replies with a grin. Which means you're either a toy...or your food. You have no other use".
You can't believe what you're hearing. This is most definitely NOT how parents are supposed to behave. They should be protecting you. And, if they really do have the alien's powers, the should return you to your normal size.
As if in response to your thoughts, your dad says,
"Y'know, it's a funny thing. But I can't see as anything other than something I can use to help me pleasure my wife, or something we can eat. We have no parental feelings towards you at all. It's like you were only made to serve us. Now, last chance. Get inside that pussy..now..and I'll show mercy by wearing a condom. Otherwise.." your dad nods down to his crotch. "You find out what it's like to be a hard on".
"You wouldn't dare", you say, feeling strangely calm.
Your dad smiles, then you gasp as you feel a tingling sensation throughout your body. You grow to about eleven inches, and you find that you're paralysed.
You topple over and land on your mom's groin, with your head hovering over her belly button. Her skin feels warm and smooth. You get thrown into the air slightly as she laughs.
You can only watch helplessly as your dad reaches down with an enormous left hand. You feel the fingers wrap around your torso as he lifts you off your mom's body. He brings up to chest height and stares down at you for a few seconds. Then he looks at your mom and says, "what d'you think babe? would I dare to turn this shrunken little punk into my cock?"
Your mom giggles and replies, "of course you'd dare baby. And he'll look good as your dick. Besides, he's just the right shape for it. But do it quickly. I'm so hot. Your cock is my pussy's favorite meal. And she's starving". She starts to rub her pussy, groaning softly as does so.
"Well, let's give your pussy a meal she'll really enjoy". With that, you're turned over so that you're facing down, and he lowers you down to his cock. Suddenly feeling a deep sense of terror, and struggling to control your panic, you cry out, "NO WAIT. I I'LL CLIMB INSIDE HER. I'LL DO WHATEVER YOU WANT...PLEASE".
You hear your dad laugh. "Yeah" he sneers. "Now you know I'm serious you'll do whatever we want. Well it's too late. You're gonna learn to be an obedient slave for your mistress. And this is your firt lesson".
He holds your feet above the head of his cock. You're about to beg for mercy, but are struck dumb with amazement as the long slit in the top of his cock head suddenly opens wide, like the mouth of a python. Only without the fangs.
"Neat trick huh?" your dad asks. I could let it swallow you whole if I wanted to. Pull you all the way down into one of my balls. And I may just do that. but not tonight".
You can only let out a terrified squeal as your dad slides your feet inside his urethra. Your mom and dad laugh when they hear it. "Squeal l'il piggy", your dad says as he puts on a southern drawl. He places his index finger on top of your head. His other three fingers are pressed gently on your front, while his thumb is pressed against you back between your shoulder blades. He presses on your head and pushes. To your complete surprise, and horror, your body slides down your dad's urethra fairly quickly and easily, until only your head is outside his cock. You can feel the walls of his cock squeezing your whole body tightly.
"Fuck, that feels good", your dad says breathlessly. After a few seconds, you feel the tingling sensation again. This time though, it's just in your feet. You hear your dad groan again. At the same time, you feel as though your feet are being pulled and stretched in all directions, as well as the tingling. Within seconds, the tingling and stretching sensations slowly move up into your ankles and legs below the knees. It quickly spreads into your upper legs and your waist. You want to beg him to stop, cry out for help. But you're in such a deep state of shock and terror that you can only whimper. It feels like forever, but is probably no more than about five minutes. The stretching and tingling sensations slowly make their way up you body until it reaches your head. All the while, your dad moans and groans with pleasure, occasionally releasing a sigh. Suddenly, your dad jumps off the bed and moves over to your mom's full length mirror. You can only watch helplessly as your head slowly begins to distort and change color to match the color of his cock head. Your face spreads out over the tip of his cock and as the top of your head moves back. You watch your hair disappear and see a kind of shimmer. You see your dad's left hand move to his neatly trimmed pubic hair and gently brush it. You're shocked when you feel the tips of his fingers in your hair. Finally, your mouth twists until it's vertical, and then takes on the appearance of a urethra. You feel your throat extend all the way down your body. And then, the tingling and stretching sensations fade away. You find yourself staring into the mirror, feeling a mixture of emotions. Fear, horror, disgust, shock. You're mind can't take in the sight before it. Despite the fact you can see, you can't see yourself. All you can see is your dad's ten inch cock reflected in the mirror. You watch as he reaches for it with his right hand, and then the full horror of what's happened hits you. Whilst watching the fingers wrap around the shaft of his cock. You feel a hand wrapping itself tightly around your body. It's only then you realise that it's actually happened. Your dad, your own father, has turned you into his penis.
You feel his body shake as he laughs. "You look great down there" he says with a grin. "I'm going to enjoy putting you to work on your mistress".
With that, he turns around and walks back to the bed, and your mom, who has a hungry look on her face.