Wow, I haven't started a new FanFiction since my Silent Hill craze :O Anyways, here's my first Invader Zim fanfic. I hope it won't make your eyeballs bleed out of your skull :3

It began hardly a month ago while he was trying to fall asleep in his bed. At first he wasn't aware of what was going on. It was like he had blacked out and woke up feeling as if his body had been hit by a train. He thought that he had fallen asleep in some highly unpleasant position and woke up feeling terribly sore and achy in the middle of the night, unaware of what it truly was until he went to school a few days later.

He had been in the bathroom alone when it happened again. A slight headache throbbed in his skull and a tingling sensation formed in his fingers and toes before it occurred, then he could have sworn that he had blinked and was laying on the ground of the disgusting toilet stall. He was breathing heavily but didn't know why. His head had hit something when he fell and he must have bitten his tongue since a gentle stream of blood was slowly trickling out of his mouth. When he tried to move, he felt a terrible pressure in his head and an unusual sense of general sickness and discomfort. When he staggered over to the mirror, he saw that he had been scraped in multiple places and bruises were forming. How long had he been out?

A feeling of dread settled in his stomach as he cleaned himself of the blood and slowly walked back to class. He was expecting all sorts of strange things from his body nowadays. The entrance of puberty had caused him to grow and thin out to the point where he could clearly see his ribs beneath the surface of his skin. Hormones were a strange thing and he knew that it would cause bizarre things to happen as he grew and matured, but this? This wasn't normal. Twice now it's happened and he wasn't sure what it even was.

Of course, stepping into class didn't help.

He still looked disheveled and Zim—that arrogant, stubborn, stupid little alien—wasted no time in commenting on it. There was a smirk upon his face, an incessantly irritating little curve of the lips in the right hand corner. "Did the toilet beat you up, Dib-human?"

Dib glared at the alien, then glanced at the clock. Nearly half an hour had gone by. Something was wrong with his body…something terribly, terribly wrong.

His legs were wobbly as he made his way over to his desk, his skinny body not wanting to carry his weight anymore as he sat down on his chair with more effort than it usually took. He felt tired, weak. The teacher scolded him for being gone for so long, but he was too busy looking at his hands. The palms were sweaty and he had the urge to puke.

His eyes moved to Zim. The whole class was quiet as they listened to Ms. Bitters' angry speech directed towards the scythe-haired boy, but he wasn't paying attention. He stared at Zim intently, his gaze piercing and angry. "What did you do to me?" he growled.

Zim looked back at him from he was with his thin legs upon the desk, reclined in a lazy fashion as he balanced a pencil on his lip out of boredom. "What?"

"You did something to me! I don't know what, but you did!" Dib accused, pointing a shaky finger at the alien. Ms. Bitters went quiet right about then, surprised by his sudden outburst.

Zim narrowed his eyes at him. "What are you talking about? I haven't touched you."

"Shut up! I know you did something!" Dib yelled, slamming his palms against the desk as he suddenly stood.

Zim scowled like how he usually did when he was falsely accused. "I didn't do anything to you, human stench!"

"Something's been happening to me and I know it's your fault! WHAT DID YOU DO TO ME?!"

"YOU LIE!" Zim roared back, appearing legitimately angered.

"Shut up, the both of you!" Ms. Bitters thundered, her lanky figure standing behind her desk.

Dib looked at her with his eyes, still breathing with effort.

"If you two have a problem with each other, work it out after class. The rest of you, get out your textbooks and open to page two-hundred and fifty-three," the frightening teacher said.

Dib glared at Zim one last time, but the two said nothing more until the bell rang to signify their release for the rest of the day.

Dib took extra time packing his bag, purposely taking longer to increase the distance between himself and Zim. The alien was the first to leave the room, so he felt relatively safe in not encountering him for the rest of the day.

Instead, Zim was waiting right outside the classroom. The human nearly walked straight into him.

The thin alien was wearing an interested and contemplative look on his face. He was even thinner than Dib himself was and significantly curvier. His thighs never touched when he was standing or walking, and his purplish-pink, well-conforming shirt only made him seem even more feminine.

"Alright, Dib-human," he began. "What's been happening to you that caused you to accuse Zim of something he didn't do? If anyone's going to bring you pain, it should be me, not some imposter."

Dib sneered at him. "Leave it to you to say that," he said as he shoved past the green alien, intent on heading home.

"Don't ignore the Zim!" Zim said as he quickly walked after the human. "What madness is this?! Something bothering you, and you can't tell you future slave master what it is?!"

"I just feel sick, okay?" Dib replied. "Ill, you know what that is? Something's wrong with me, and I'm pretty certain you've done something to cause it."

Zim furrowed his brow. "But I haven't touched you."

Dib stormed out of the front of the school, his black trench coat flowing in the wind. He stuffed his hands into his pockets and turned down the street, but Zim was still following him. "Well? Don't you have to go take over the world or something?" he muttered. "Now's good timing considering I'm too worried over my own physical safety."

"Get on with you," Zim said. "I want to see what this 'sickness' is. Does it involve projectile vomiting?"

Dib sighed. "No," he said. "I black out and feel like a truck hit me."

Zim only looked confused. "Humans and their inferior illnesses…"

"Go away, Zim," Dib said with less enthusiasm than usual. He held his head down low as he walked. "I just want to be left alone."

Zim stopped walking, looking insulted by the demand. "Pitiful human," he said, turning around and heading towards his own house.

Once inside, Dib looked around the cold home. His father was gone—as usual—and Gaz had beaten him home, playing her video games in the living room and ignoring her homework. She didn't even acknowledge his existence as he went up the stairs and into his room.

He set up one of his multiple cameras and had it facing his bed. He hit the record button and laid down, figuring that if it happened again, he'd at least be able to see what was happening to him in the span of time that he kept blacking out. He laid down, hoping it wasn't anything serious.

Hours passed until it happened again for no distinctive reason. He was very aware of his physical sensations before it started. Tingling in the fingers and toes, slight shaking in his arms and legs, and then he blacked out, only to wake up gasping and wheezing with a bleeding mouth. He moaned in pain, rolling over onto his side. He laid there for a second, breathing slowly as he stared at the camera. He needed to get up and see it. He needed to know what had happened to him, but he couldn't get out of the bed. His muscles felt so incredibly weakened.

Feeling defeated, he waited in his bed, laying helplessly upon the mattress.