Incubus
A simple glimpse into the life of a demon and his pet
"I need more..."
"And more is what you shall receive, my darling pig."
A semi human creature, only about five feet tall, crawled up onto the expanse of flesh that belonged to the 'pig'. Thrusting its firm, but cold cock into the obese man's belly button, its six arms spread out, two moving down to rub the sides of his gut, two moving up to play with his nipples, and a third longer pair reaching over to a table and retrieving food to stuff in the gluttonous human's mouth.
The man moaned in ecstasy, the incubus thrusting harder into the man's gut, feeling the pull of his navel on its erect penis. The man let out a burp, followed by another moan, while the demon laid its head next to his ear and began to whisper in a gruff voice.
"You're getting to be a fat piggy aren't you?"
"You like being fat, I can tell."
"Eat for me piggy. Get even fatter for me."
The man just nodded and grunted, his mouth too full of food to say anything. His eyes half open, he continued to eat, his hips bucking occasionally in response to the demon's words and stimulus. With its tail, it reached down to the man's crotch and began to rub his huge dick, while stopping the end with the tip to prevent him from reaching climax.
"Eat some more piggy, and I'll let you cum. Only good little piggies get relief." the demon whispered. The man groaned, unable to resist the demon's words. It had been like this for years. Ever since the man came to terms with the fact that he enjoys eating, and stuffing himself until his belly ached with fullness, the demon had been there encouraging him. It was only recently the two had began an actual relationship, but the only change was that the man worked even harder to gain more weight, and the demon had taken to handling the the aspects of the man's life that he no longer could.
The demon finally reached its own climax, cumming in the mans navel. He let out a grunt as a warm feeling spread outward from the point of origin, and through his whole body, as he swelled with fat quickly. His own dick began to swell more as well, becoming longer, and thicker, to the demon's delight. Removing its tail, the demon let the man cum as much as he could, the liquid flowing out at incredible quantities. The demon continued to rub his penis, hoping to get every drop he can out.
"That's right my little piggy, just like that. Wasn't that nice?"
"Yes... it was amazing." The man grunted, unaware that his mass wasn't the only thing that had changed in that moment of pleasure. His nose had flattened out as well, his ears had gotten longer, and folded over, while his feet become hooflike. His body had become not only fatter, but more muscular as well, and his enormous belly had gotten quite a bit fuzzier.
"Mmm, you look so much better like this, don't you agree?" The demon asked the man, revealing his new body with the help of a large overhead mirror. "Just look at you. A real pig like you always were inside. You're so handsome now, don't you think?"
"I really am a fat pig..." He mumbled, mystified by what had happened.
"And you know what pigs do?" The demon asked, conjuring more food. "They get nice and fat for their masters."
"I want to be the biggest, fattest pig ever." He said, rubbing his huge gut. "I will be the biggest, fattest pig ever."
"And that's what you shall recieve, my darling pig."