"This isn't me! This isn't who I am!", the voice screamed in the back of your head.
"I've always been a cock.", you thought back to it in response.
"No! You're not real! You're fake! You're not the real me!", it wailed.
Your head throbbed, starting to ache, "Shut up. I can't believe you almost decieved me before."
"No no no! This keeps getting worse! You're not real! You're not me!", you could feel it becoming ever more agitated within you.
You made your way to the couch and sat down. After a moment of concentration, you turn inward to look upon the offender. It appeared to be you, but with a human head.
You were able to perceive your own mental image as well; a leviathan sized cock, twisting and coiling about throughout your mind.
The deceiver flailed around, kicking and screaming and punching at the surfaces of your head. It didn't really hurt, but it was still really pissing you off.
You bent down to loom directly over it, a loud voice emanating out from your cumslit, "I was so lucky to be a cock born with a body of my own, even if it was a human body. Why must you be so evil as to try and take this away from me, deciever?"
"You're the one whose stealing from me! You can't have my body, you can't have my senses, and you can't have my identity!"
It was starting to come back to you now. There was this human head that had been attached to your groin somehow. It had tried to take over. It had tried to swap places with your head, but you managed to fix it. You even managed to get your groin back to having a cock as it was meant to be, and yet, this usurper still remained, utterly convinced of its own superiority and truth.
Your form leaned closer, now being face to face with the human headed doppleganger, "That's enough! If I have to have you here, you're going to need to be corrected to not be so awful and wrong!", the smell emanating from your cumslit seemed to make the deciever recoil in fear, or possibly disgust. It didn't get far before colliding with part of your coiling shaft, causing it to yelp and scramble about.
You closed in on the human. Its eyes were wide with shock as it looked upon you approaching. Your cumslit yawned open wide, and began to pull the deciever within, head first.
It slid into you easily, your insides heavily slickened with cum and pre. You could feel the weight of your mind lifting as it was pulled inside. Its struggles became quiet and muffled within you as you swallowed it down.
You returned back to the physical world, having no more need to actively engage in the mental realm. As the deciever travelled further and further into the depths of your coils, you set to massaging your head once more. The feel of the soft feminine feet made you throb and twitch with such pleasure. It didn't take very long for you to be drooling copious amounts of precum. The pre made for wonderful lube. The way it soaked into the soft feet felt lovely, too.
Your other upper foot also explored your head, but this one stroked and teased your cumslit and the underside of your head. It wasn't hard at all for you to slip your big toe into the drooling hole. It felt so good, although you usually would use your fingers and be able to reach quite a bit deeper- and with your fingers, you also had the option to use more to fill yourself up with. Whatever, you could fuck your slit with just about anything and it'd feel good.
You slowed your masturbation for a moment— albeit still idly rubbing and "fingering" yourself— and checked to see how the deceiver was handling its current situation.
It seemed to be much calmer now. With each passing second inside of you, there seemed to be less temper and indignation, and more passion and lust. Its delusions were fairly easily dismantled and rectified when reality surrounded and assaulted it from all sides.
You decide its proper home would probably be within your cock, but you think it would be best if it kept quiet and to itself. If it behaved well, perhaps you would find some way to reward it.