'Y'know baby', you're dad says with an evil grin. 'I think our slave would love to have the honour of being my penis while we fuck, wouldn't you, slave'?
You stare up at you dad in abject terror. Even being used and abused by your mom is better than being turned into your own dad's cock. And angry look appears on his face when you don't reply immediately. So in a panic, you nod your head and quickly reply;
'Y..yes master. I would.....I....I would....love to be your penis. Especially while you have sex with my mistress'.
You feel completely humiliated and disgusted having to say that, but it's still better than the agony you'll experience if you don't. Your smiles as he looks down at you.
'What do you think honey, does our slave deserve to be my cock'?
'Hmmm, I dunno', your mom replies with an evil grin. 'He's been a pretty lousy slave so far. Oh what the hell, I want your cock inside me. And I want our slave inside me. May as well kill two birds with one stone'.
Your mom gently presses her right index finger on your head, and says;
'Beg your master to turn you into his cock'.
It turns out that your mom put the words she wants you to use in your head when she touched your head. She also made it so you couldn't help but say those words.
'Please master', you hear yourself say. 'I would love to help you give my mistress the pleasure she deserves. I beg you, allow me the honour of being your penis. That way, I can serve my master and mistress at the same time'.
Both your mom and dad laugh loudly, compounding the humiliation you already feel.
'You really are a pathetic little creature, aren't you slave'? Your dad says with a smile. 'Still, it will be a pleasure to turn you into my penis. And it will be even more of a pleasure to slide you in and out of your mistress's vagina'.
You feel the same unpleasant tingling sensation you felt when your mom first shrank you. This time though, you actually get a little bigger. About eleven inches in fact. You're also paralysed. The fear you've been feeling ever since you got hit by that is magnified ten fold as you helplessly watch your dad reach down for you with his giant right hand. He carries you over to the full length mirror your parents have in their bedroom, puts a chair in front of it and sits down. He holds the base of his cock with left hand and then lifts you above it. Looking in the mirror, you feel both a sense of terror and amazement as the slit on the top of his cockhead opens like a mouth. Your dad licks his lips and then lets out a loud gasp as he slides your feet inside. He then lets out a soft groan as your lower legs disappear into his dick, followed by your thighs and your hips.
'Fuck, this feels great'. Your dad says. He then lets out a little laugh and adds, 'I never thought I'd be able to swallow another person with my cock. This is awesome'.
After about a minute, you're in up to your chest. Then a few seconds later, only your head is left outside. Your dad's cock holds you tight, and then you feel the tingling again. This time however, there's no size changing. Instead, you see a slight ripple in the base of your dad's cock, about the same time you have the feeling of your feet and lower calves melting. Your dad closes his eyes and groans loudly as sensation slowly travels up your legs. Within a couple of minutes, you realise that your body no longer exists below your waist, that part of you, including your hands, which were by your sides, is now the lower half of your dad's cock. The shimmering and melting sensation slowly continues, travelling up your arms and your midriff, then your chest, as your body is absorbed by dad's dick. Eventually only head is left and you can only watch helplessly as your hair disappears and your head deforms until it has merged with the head of your dad's cock. All your facial features, except your mouth disappear, leaving you briefly wondering how you can still see. Then, in the mirror, you see your mouth twist vertically and you feel your throat stretch all the down what used to be your body, as it obviously becomes your dad's urethra. And then, the melting and shimmering stop. You feel a shaking as your dad opens his eyes and laughs as he looks at you in the mirror. You can't believe it. Despite what you see in the mirror, you just can't believe it. You don't exist as a human anymore. You're only a part of a human now. You're your own dad's penis.
'HOLY SHIT'! He says in amazement. 'I DID IT. I TURNED HIM INTO MY COCK'.
Your mom walks over and then kneels down between his legs. She looks down at you hungrily as she takes hold of you with her right hand. She licks her lips and says;
'Yes you did. And he looks great. So, slave, how's it feel to be your master's penis? Is it everything you hoped it would be? You're going to give me a lot of pleasure. And who knows? You may find you love it so much, you'll want to be a penis forever'.
Your mom stands up and then straddles your dad, pressing you between them. They kiss passionately, and then: