It wasn't right.

There was no reason for this.

And yet...

Dib couldn't help the beat in his chest, or the feeling swarming his stomach.

It was so, so not right.

But when the Irken had turned those eyes on him, nothing mattered.

Zim had pushed him against the table, his tongue sliding out and slithering on Dib's cheek, tasting him as if he might contain poison.

Dib let out a shaky breath, moving his hands to the Irken's hips. The feeling of the serpent-like tongue made him take in a small gasp, it sending tingles down his spine. His fingers dug into the fabric in response, wanting more. Wanting. so. so. much. more.

The tongue explored further, moving from his cheek, leaving a trail of wet to the human's ear before curling around to investigate the flesh there.

Dib shuddered and started to squirm, the feelings getting to be too much for too little.

"Dib-beast," the Irken murmured against his ear. "You ought to remove these rags." Zim tugged at the hem of his shirt.

There wasn't a second of hesitation before Dib was struggling out of his shirt. Zim had pulled away so he could and swiftly pulled his uniform over his head.

Heat flooded Dib's cheeks, seeing such an erotic sight, and then he felt the heat pool elsewhere.

"Zim," he keened, feeling the sharp teeth graze against his neck. His hands went back to there previous post, but this time tugged Zim closer.

"Human?" he felt the breath blow hotly across his neck.

Dib moaned, trying to make his point for the Irken to get on with it.

Zim chuckled and his teeth dug in just a bit harder, but his hands became the center of Dib's attention as they went to his jeans and started to push them off along with his boxers. They fell to the floor and Dib struggled, trying to kick them off without losing the contact of flesh on flesh.

"You sound like you want something," the Irken teased, drawing teeth up the throat to the jaw, satisfied with Dib's compliance as he nipped the tender skin there, bringing angry red marks to the surface that would leave bruises in the morning.

"Yeees," Dib sighed.

The teeth released the skin they;d been so affectionate with to allow a malicious grin. "Perhaps... you should work for it?"

"Wha-?"

But Dib hadn't finished his word before the invader had pulled away and scurried off.

"Zim!?"

Dib was left alone, breathing hard, his heart beating so loudly, his skin so hot but cold with the removal of the other's body, and painfully aroused.

"Find me, Dib-beast." The voice came from somewhere in Zim's living room, then he heard the whir of the elevator descending.

Dib went after him, but had to wait for the elevator to return. When it did, he got on, and looked around. "Take me to Zim," he told the computer.

It started moving. He wrapped his arms around himself feeling exposed, and the increasing cold didn't help.

The base had a distinct hum. When he stepped out, he hesitated. It was an empty corridor, leading to a door.

Dib approached knowing it must be it, there was nothing else.

When he pushed the door open, his eyes were immediately met with the dark green of Zim's genitals, fully exposed where he lounged back on the floor.

"Hello, Dib-beast," he said smugly, spreading his thighs just a bit more, an invitation for him to come closer.

Dib took one step after the other, feeling the arousal get worse with every step. He wanted Zim so badly.

When he was close enough, the Irken beckoned for him to come down to him, and Dib listened without question, falling to all fours and crawling close.

Claws grazed along his cheek when he was close enough and slid back to his neck, then settled on his shoulder.

The irken stared back at Dib. "Well? Pleasure me."

There was still no 'disobedience' as Zim liked to call it. Dib pulled at the Irken hips, getting himself situated before he pushed into the slit.

The claws on his shoulders tightened painfully, but it was barely felt as Dib felt so relieved to finally have the warmth around him, and better yet, feel Zim's unexposed member pressing agianst his inside that tight space.

Then the purring started before Dib had gone any further and he could feel Zim's member moving, trying to break free of the folds of skin protecting it.

He made it slow at first, a gentle pull that still made the purring louder. Then back in, claws tightened. Out again and the claws moved from his shoulders to his back tugging.

"Hard, Dib-beast."

It was a request he was more than happy to listen to.

The next thrust was faster, and the Irken squeaked, drawing small scratches into the pale skin. The member that had been so tucked away, finally poked out and continued to emerge from its fleshy prison between the irken's legs.

Another thrust and the purring came back loud as ever.

"Harder."

Dib thrust in deep and the Irken this time dug his claws in and drew blood.

"Hard," was a new whine, more needy than the previous. Claws unlatched themselves to run down vertebrae and bony ribs.

Purring turned to loud clicking, and harmless scratches turned to bloody ones.

Dib needed every moment, every inch, every feeling that coursed through him.

His hips rolled vigorous, every thrust sending a hot bolt into him, his stomach clenching.

At first it was amazing, even heavenly. But then Zim dug his claws in solidly and started meeting him with every thrust, driving Dib even deeper. There was a sudden moment and Zim was left gasping clawing all over again, his member hard and swollen, but most importantly Dib was reaching that spot so tightly packed with nerves.

Dib almost couldn't handle it, it was almost too much. So much around him all at once, sliding, moving, such friction against him.

The clicking from Zim became more frantic and the alien gripped Dib's back and rolled his hips as vigorously as Dib was against him but there was no more length to take in. Hot drops of blood started to form around the claws.

His body was shuddering, so close. Dib frantically pulled the irken closer with his free hand, the other supporting his weight.

The feeling mounted suddenly, every touch, every bit of friction sent the most amazing shivers into him and he wanted all that he could get, driving into Zim all the way and making all the friction he could. There was a short moment of pure ecstasy before he grunted and it was draining away from him. He slowed, his body quivering.

Zim was still beneath him, panting.

"Dib..." an annoyed tone, paired with a frustrated stare.

Fingers brushed along the irken before finding the member and pumping, the best Dib could do to please him.

Zim keened, clicking returning, and becoming just as frantic before. It didn't take long before he was squirming, clawing, even trying to kick at the floor on either side of Dib and then it all stopped, claws shooting down to guide the fingers, forcing them harder and faster. The irken let out a loud mewl and then the fluid was dripping down Dib's hand.

Zim collapsed and Dib finally pulled away and laid down next to him.

Soon after the Irken had pulled the human body close to him, enjoying warmth.

He let his head rest against the others chest, hearing the slowing heartbeat. Blood still specked his claws and a satisfied smile came across his face.

The Dib-beast was his, and the scars would always prove it.