Rae chuckled as Zim and I both screamed our heads off, chanting, "!"
Zim was having a total meltdown, since Rae had turned him into a human. His and contacts had fused with him, and his skin turned a peach-ish color instead of light green. He had a nose, and ears. He obviously hated this. Probably even more than I hated being an Irken.
So basically, we everyone was freaking out except for Dib and Rae. Dib was laughing his head off. "Ha! Now you can't destroy the humans, because you are one!"
"SILENCE, DIB-WORM!" Zim screamed.
Rae shook her head stubbornly. "You're gonna be a human until you give Rina her lungs back. And Rina, you're going to be an Irken until you get your lungs back, because you obviously can't breathe without them."
I crossed my arms. "Zim, give me back my lungs now, or I promise you, I'll behead you and hang your stupid, disgusting head on my wall!" I threatened.
"NEVER! And why on Irk would you want my perfect head on your wall?" Zim demanded. I was about to say something, but Rae interrupted. "GIVE HER THE LUNGS, YOU LOW-LIFE!"
"NEVER!" He started hyperventilating. "NOT... UNTIL... YOU CHANGE ME... BACK!" Rae sighed. "Fine." She pressed the Irken button on the remote, and fired it at Zim. There was a bright flash, and the next time Rae and I looked, he was an Irken once more. "HA! NOW I'LL NEVER GIVE THEM BACK! FOOLISH HUMANS!"
"...But we're not humans right now..." I pointed out. "AND GIVE ME BACK MY LUNGS OR I'LL YANK OUT YOUR BLOODSTREAMS AND USE THEM AS DENTAL FLOSS!" I angrily tackled him.
"Zim! Give her the lungs!" Dib said.
"FILTH! GET OFF OF ME!" Zim screamed, but I angrily began slamming my fists into his stomach. "GIR! DEFENSIVE MODE!" But GIR wasn't there. Zim stood on his PAK legs, lifting me into the air with him. "MORON! LET GO! I'LL GIVE YOU YOUR LUNGS, JUST LET ME GO!" I did so, falling to the ground and landing on my feet. Zim reluctantly reached into his PAK and pulled out the organ harvester, but instead of giving back my lungs, he smiled evilly. "Maybe I'll steal your squeedlyspooch now!" Rae walked up behind him, and brought a book down on the back of his head. Zim fell to the floor, unconcious.
"Creeper," Rae muttered. She poked the organ harvester, and pressed a button. Two lungs came out. Rae bit her tongue, disgusted. "Yeah, that's nasty..." Dib muttered.

I, now a regular human, grinned victoriously as I walked home. Today had been a really weird day. Rae had already gone home (deciding to remain Irken). Honestly, sometimes I wondered if she had a brain at all. Ah, well. At least she had gotten my lungs back. I wondered what Rae's parents would think when she got home. Rae had promised that they wouldn't care, but I wasn't completely sure...
I opened the door, met by my mother, who looked slightly worried. "Marina, where have you been?" she asked.
"Erm, see, it's a long story. See, there was an alien, and he stole my lungs, and my friend turned herself and I into Irkens so I could breathe, and-" I started, but Mom interrupted.
"Oh, you were out playing with your friends."
"But Mom, Zim isn't my friend, and we weren't playing! Zim is an alien!"
"Of course he is, honey. Dinner's on the table."
"But Mooooom..." I whined as I sat down at the table. Mom had set my plate on the table. Spaghetti. That was my favorite meal, but it was hard to enjoy it, knowing my only friend had kinda betrayed the humans by becoming an Irken, and Zim was probably going to kill me or something.

The next day at Skool, Ms. Bitters' class had a substitute. The man had short, dark brown hair and dark brown hair, and his skin was very pale. I took my seat beside Zim, who shot me a glare, and then glared at Dib, who was at the other side of the room. I turned around to look at the seat behind The Letter M, where Rae sat. She hadn't arrived yet.
A few minutes later, when she arrived, I facepalmed at her horrible disguise. It was just her polar bear hat with contact lenses that she had stolen from Zim. As she took her seat, a few kids whispered nervously. As much as I wanted to expose the filthy aliens, I couldn't imagine causing Rae's autopsy. I sighed, and made up an excuse. "Rae is normal! She just, uh... caught Zim's skin condition! Yes, that's it..."
The kids shrugged, and continued talking about whatever they had been talking about earlier. A short girl with long, brown hair and green eyes kept looking at Zim, and then at Rae. Wasn't her name Mae? Yes, I think it was.
She glanced at me, and I looked away. The substitute began class. "Hello, class. My name is Mr... uh... Nobody. Now open your textbooks to page 333."
I looked at Dib and Mae, who were looking out the window. GIR was outside, using the hoverjets in his feet to fly around outside. Zim hadn't seemed to notice this yet, and he was doing something to his pencil. I couldn't see what he was doing, but he was definitely doing... something. Mae raised her hand. "Um, Mr. Nobody?"
"What?" Mr. Nobody asked. "...Sir, there's a robot outside..."
"Nonsense! That's a weather balloon."
"That's not a weather balloon," Dib protested. "Sir, can it be proven that it's a weather balloon?"
Zim was looking out the window now, mouthing 'Go home!' to GIR. GIR landed, but didn't leave. Mr. Nobody began drawing a chart on the board. When he finished, it was a chart of varius shapes, all labeled weather balloon. "There's your proof," Mr. Nobody said, sitting back down at Ms. Bitters' desk. "That doesn't prove anything..." I muttered under my breath.
I glanced back, and Rae was making paper airplanes. Mr. Nobody scowled, and took up her airplanes. "YOU FLUNK FOR THE DAY! And take that ridiculous hat off."
Rae's eyes widened. "But... but I need this hat..." she muttered.
"SHE'S AN ALIEN!" Dib shouted.
"No she's not!" I lied. "Mr. Nobody, see, Rachel has this disease... if she takes the hat off, she'll die. And, uh, th-the disease is very contagious!"
"...She has to wear a hat to live?" Mae asked. "That doesn't make any sense..."
"BUT SHE'S AN ALIEN!" Dib protested. "ZIM IS TOO! WHY DON'T YOU BELIEVE ME?"
"Because you're crazy?" Zita and Sara offered in unison.
"You flunk for the day!" Mr. Nobody told Dib. Dib sighed, and gave up.
Mr. Nobody returned his attention to Rae and I. "Very well. But you-" he pointed at me- "have no excuse to wear a hat. Take it off."
"...But I like this hat..." I muttered.
"NOW!" I reluctantly took off my hat and set it on my desk. Mr. Nobody started to walk back to the desk. "KEEP READING!" he ordered. Suddenly, the door was kicked open, and the police barged in. They ran up to Mr. Nobody and dragged him outside. We all stared in shock, and everyone remained silent. This had been so abrupt...
The man screamed and struggled as he was dragged out, but he could not fight off all of the police at once. He was dragged outside to the police car by all the policemen minus one. The remaining one stared at us. "I apologize, children," he said. "That man was not Mr. Nobody. That was a man wanted by the FBI for several murders and robberies. Your new substitute will be here soon."
With that, the man departed, and the classroom exploded into chaos. Great. Just when I thought the Skool year couldn't get any weirder.