The Smart Girl

A big, black, metal object... It was...

A toothbrush.

The English Teacher's teeth started to feel very very painful. The only way to stop the pain was to brush his teeth. And not only just brushing his teeth, he also had to brush his teeth with blackened uranium metal.

Why uranium? Because it's radioactive.

Why blackened? Well... He likes black...

His teeth always start to hurt when his brain implodes (figuratively), and so, he sprints out of the classroom. His students stare after him, confused, and shrug. They relax in their seats... and the English Teacher is back.

His teeth still hurt, because he had forgotten his special radioactive toothpaste. He grabbed it from the same drawer and rushed out of the classroom.

The class was silent, and one of the students, the one obsessed with Japanese death gods, said out loud, "What the fuck?"

The rest of the class agreed wholeheartedly (except for the English nerd, who hated all swearwords) and started chatting. The class became quite relaxed, but 10 minutes later...

Echoes of girly screams echoed down the hallway. The class froze. The screams got closer, and stopped in front of the doorway.

There was a monster standing there, holding the girl who had gone to the bathroom minutes earlier in its green fingers. It had a slight resemblance of the English Teacher, except for the fact that it was green, glowing slightly, and radioactive. The girl kicked and screamed, and finally the English Monster dropped her on the floor.

The English Monster's face was... disgusting, to say the least. It was green and deformed and he was foaming at the mouth, green, glowing foam.

The rest of the class started screaming, and the temporarily-kidnapped-girl's "best friend" stood up and, oddly enough, smiled evilly. She took the tube of radioactive toothpaste from the English Monster's fingers, examined it, still smiling evilly.

She found a particular spot on the tube, and squeezed it, aiming at the English Monster.

Something that wasn't green, glowing, or toothpaste shot out of the tube and hit the English Monster in the chest. The rest of the class couldn't see the blood dripping from the wound, because it was green and glowing as well, and they couldn't see what had shot out from the tube either.

It was a bullet.

The Smart Girl was the Assassin. She was disguised as the Smart Girl, but the real Smart Girl had been killed a few months ago.

But the rest of the class didn't know this, and so they watched, horrified, as the English Monster morphed back into the English Teacher, but he was...

Dead. Stone cold dead, on the floor. The English Monster seemed to have killed him and mutated his body to suit himself.

The class stared, and then all of them began to react in some way.

Some laughed, some cried, some poked the body, some hugged themselves, some screamed, some fainted, some fell asleep, some blinked, some stared blankly, some stared coldly, some stared stunned, some kicked the body, some puked, some ran out the door, some just had no reaction at all (aka the Smart Girl), some - 

I guess there were only 15 of them.

Eventually, someone dressed entirely in black came in and dragged the body out of the room, and after a few minutes the class was normal again.

But something else was going to happen... Someone else was going to die...

The Smart Girl reached under her desk and pulled out an object...

A big, metal object... Something very, very dangerous if used well... It was...