"Why on earth would he send me a muk?" Samuel cried out, as the smell of the reaking blob slowly filled his nostrils.

Muk on the other hand was even more confused. Not only was he suddenly far away from his home back at the powerplant, but the trainer who captured him was nowhere to be seen. He had liked the sight of the boy with the blue jacket, and the power of that Pikachu was simply overwhelming. The last thing he remembered was to be hit in the head by a round object, and now he was suddenly here.

"Muk Muk" He inquired, wondering where he was.

Samuel, having recovered from the stench, informed the smelly blob he was in Pallet Town, on his personal ranch. Samuel didn't understand pokéspeak, but he knew very well that every time a new Pokémon came to his place for the first time, they would want to know where they were.

After Samuel gave Muk all the usual information he took him to the special washroom. It had a bathtub designed so that a Grimer, or Muk could get in easily, be washed, and get out, without the problem of the semi-fluid Pokémon themselves washing away.

Samuel never liked it when he received a new Muk. Not only would it take several weeks to get the smell out of his lab. A bath alone wouldn't take it away from Muk. Luckily it had only taken him a month of research to find out what would take this kind of smell away. He had developed a special ingredient for his Pokémon food, that neutralized the smell.

A week later, Muk had gotten used to his new environment and had developed a friendship with the old man. Contrary to most Pokémon, Muk had chosen the house of the professor to live in. There was a nice swamp in the backyard, but Muk couldn't care less. Samuel had been nice to him ever since he had arrived. Besides, thanks to videophones, he could catch a glimpse of his trainer sometimes.

Samuel had never experienced such behavior from a Pokémon at his lab. They all usually stayed in their pokéballs, or went to a region that seemed natural for them. It interested him, he had to find the motives behind this Muk's actions. But he first had to answer a phone call.

A little boy with a cap appeared on the screen. Of course, this was to be expected. It had been three days since his last call, and according to Samuels calculations his journey to the next pokémoncenter should have taken about three days.

After attaining the usual information on what Ash had been through since the last call and assuring him he would never eat Krabby, or Tauros, Samuel prepared to hang up. A shadow appeared behind him. Ash just said good bye to Samuel as Samuel got hit by the body slam. The screen went black, showing one last flicker of a smile on Ash's face. He liked the fact that his Muk had so easily befriended the professor.

Muk lay on top of the professor. It had been so easy. While Samuel was distracted with the videophone, Muk had stayed out of the camera's eye until the last minute, while making sure Samuel didn't see him coming. As the call reached it's end, all he had to do was pounce on the old man. And now they lay there.

"I like you too Muk, but will you please get off me" Samuel asked, not even surprised at what had happened. He knew Muk liked to give him a surprise hug every once in a while. Muk, however did not get off. He had this planned three days ago, and was not willing to give up his prize so easily. While keeping most of his weight on the man, he had part of his body flow under the professor, reaching for the button of his pants.

"Muk, what are you doing!" Samuel cried out, as he realized what Muk was planning to do. "Please stop this instant!"

Muk did not stop. After he had unbuttoned the professor, he went for the zipper and slowly, but surely pulled it down. Now he had enough space to work with. Being semifluid did have it's benefits. It was far easier for Muk to enter someone's pants, than it was for any Pokémon with a more solid body.

Muk had now entered Samuel's underpants, and began to tear them, knowing they would only get in the way of the man's stimulation. He wanted it to be special, and that meant pleasing the man in every way possible. Even if the man himself currently didn't think this way about it, he was sure to change his mind, when he had been pleased.

Samuel lay on his belly on the floor. His pants, invisible under Muk's body, were pulled down just enough to have his buttocks and genitalia exposed. His cry for help was muffled under a muddy hand, and no one could hear him. Slowly a sensation began to overtake him. Muk had started to flow under his body again and was stimulating his penis in every way he knew how. The professor could only note that this wasn't the first time Muk had done something like this to a man.

A little moan came from Samuel's mouth, as Muk masturbated him, while pinning him down. The man did not care anymore about how wrong this all was. Al he cared about was how good this feeling was. A feeling that wouldn't go away soon.

Unbeknownst to the professor, Muk was also getting pleasure from this. He was capable of morphing his body into virtually any shape, which meant he could relocate his nerve endings. As he was flowing around the professor's member, he slowly placed more of his own nerve endings, to meet the man's skin.

The professor now had his waist completely surrounded by Muk. Though he was sure the professor felt pleasurable sensations, Muk wanted to take it even further. He wanted the man to hit a high he had never hit before. Muk transformed part of his body, near the only hole the professor had, that would give him even more feelings. While forming, Muk slowly pushed it against the star, the professor had between his ass-cheeks.

He entered. Samuel screamed in delight. No human had ever done this to him before, and while it was weird a Pokémon was doing it, it felt too good to stop.

The now phallic part of Muk's body was in a full five inches when it stopped growing. Muk felt this was the first time Samuel's hole was used in this manner, and stopped before he was more than the man could take.

He began to thrust in and out of the professor, his nerves now all on the phallus. He still used part of his body to masturbate the man, but that was not where the nerves were needed now. He could feel the tight virgin ass of Samuel attempt to get the foreign object out. The motions made by the ass, only sent Muk into a higher state of ecstasy. He knew they would not last much longer.

Muk began to pulsate his penis inside the professor, while still working Samuel's dick with his fluid body. He kept thrusting, not relenting, as Samuel's breathing and moaning grew heavier. Muk himself was taking in every feeling he could get. He was completely stimulated by the professors ass, and started panting, as he thrusted harder and harder.

"Muuuuuuk" He screamed, in his low voice, as he pulsed and thrusted one last time. His body tightened around Samuel, as he came hard. His seed filled the professor instantly.

This was too much for the old man to take, as he too came. He moaned loudly, as he lost complete control of his muscles. His legs kicked the air, his arms were only held in place by Muk's body, all his muscles tightened at the same time. Then he shot his load straight into Muk's fluid body, where it was instantly absorbed.

Muk got off, and together they lay on the ground, unable to move after the ordeal. Both were very tired, but also very pleased at what they had just experienced.

After about five minutes, Samuel got up. "I'm gonna take a shower," he said, looking at Muk. "The others need to be fed in half an hour, and I can't let them see me like this. Muk looked over to the professor. His clothes were dirty and his ass was leaking slightly. "This should be our secret for now," was the last thing Muk heard, before the shower started running.

Author's note

I intend to make a few more chapters, based on the anime.

This is my first story ever, so please review and give some good tips.