Gaz fucks Zim (who would never admit that it was in that order)

Zim did not know why he was currently on his back, his hands tied to a bedpost by a blanket. Had his nemesis finally captured him? Was he going to harvest his organs for something? That infernal ape, he thought. That was going to be his idea! He was going to give Dib a piece of his mind once he freed himself. Pulling hard with a mighty grunt, he attempted to free his hands for several seconds before collapsing back onto the soft surface.

"DIB!" he yelled into the dim room, "RELEASE ME FROM THESE BONDS YOU FILTHY HAIRLESS EARTH-MONKEY!"

"Dib isn't here, stupid." Zim heard a familiar voice say from below. He turned his head to see the earthlings sister, Gaz, seated on the floor, her signature scowl present. "And you aren't getting free from that knot. Trust me, I checked."

"You!" The Irken cried. "Why have you captured the mighty Zim? Are you in cahoots with your insufferuble Earth sibling?"

Gaz got up. "No, he doesn't know you're here. I don't plan on letting him know."

"What could you possibly want with my organs?!" He demanded. Gaz sighed and pinched her forehead. She came towards him.

"Look, Zim. The less noise you make, and the less you thrash around, the enjoyable this is gonna be for the both of us." Her usual sarcastic tone had...some other quality to it Zim couldn't quite discern. He was getting confused and agitated.

"I demand an explanation! You cannot hold the great and terrible Zim in captivity like this! I HAVE DOMINION OVER YOU HUMAN! I WILL DESTROY YOU A-" But he was cutoff by something he didn't expect; her mouth against his.

He mumbled in confusion and anger, beginning to wiggle, but she grabbed him by his uniform and kissed harder. He continued to complain into the kiss until finally she released him, gasping.

Zim coughed and spat. "WHY?! WHY HAVE YOU DIRTIED MY MOUTH WITH YOUR...FILTHY HUMAN GERMS!" Had his hands been free he would be wiping off his tongue. He felt disgust and anger, which must have been why his face was beginning to burn up. There was no other explanation. He certainly wasn't *flustered*.

Gaz just looked to him with that same scorn-at least, she attempted to. Her face looked like it was fighting another expression. She grabbed his shirt again, and Zim grimaced at the expectation of more mouth to mouth contact, but then she stopped.

"What are you-" he began as she climbed onto his lap. "Get off me! You cannot sit on the almighty Zi-" he was cutoff yet again, but this time from her hand. Again he mumbled into the obstruction. Gaz was looking toward his pelvic area, beginning to reach a hand toward the brim of his leggings. He mumbled an exclamation as she began to pull it down, revealing...

A wormlike appendage. It was similar to his tongue, but thicker. It looked wriggly, as if it could coil. Zim could only sputter as she placed a tentative hand on it. All traces of her usual self were gone-the look on her face was that of complete awe and...something else. Lust.

Zim gritted his teeth as he felt his member get firm from the touch. How could he allow himself to become like this from one single moment of contact? And with a filthy human, no less?

Gaz began to remove her own leggings, revealing purple panties sporting black stripes. Zim struggled once again.

"No! Stop removing your garments immediately! I-" she was kissing him again, and now the underwear was gone too. As she continued to embrace the Irken she hovered over his appendage, guiding it into her entrance. Her mouth disconnected from hers as she let out a gasp. It was warm, Zim noticed. Tight as well. Wait, why did he care?

She began to go up and down, slow at first, but then practically slamming into his pelvis. Zim began to think she might break everything there with how roughly she thrusted down. He could barely speak, but mustered up the will to anyway.

"Wretched...humans..." he managed to get out "Destroy...you all..."

Gaz continued her ride, and as she did a transformation took place. Her thrusts became less aggressive, but kept the same speed and thoroughness. Her grunting turned to soft moans as she began rolling her hips, her face one of pure ecstasy.

Her rolling became even faster until Zim began to feel a pressure build at his base. She continued to up the speed, murmurs becoming more frequent as he felt more and more closer to something.

She threw her head back as spasms took her over. Zims own bottom half hitched up as his member spurted purple material inside of the girl, his hands clenching and unclenching. Gaz spasmed a few seconds more before collapsing onto him, panting.

She turned her head toward the Irken to see his head laid back, breathing heavily. He groaned and cursed humanity under his breath as his hands went down. It seemed the knot became undone in the process.

He made no move to get away, however. Then he looked to her.

"I hate you," he whispered, but she sensed any malice in it was strained. She simply kissed him. He didn't mumble this time, just silently recieving it.

She fell asleep after a short time, and Zim was confused as to whether he hated humanity even more, or if some other opinion was beginning to form.