...dressed as a guy who followed his little brother trick-or-treating for two straight hours while carrying half his costume. Then promptly falls asleep.

Two giant humanoids walk in, one obviously a human and wearing luminescent green powered armor with a gold visor and an assault rifle on his back. The other one an alien, with a curved back, white skin, and bedecked in black armor. They simply stare blankly at the other party-goers before wandering over to a corner to chat. The human begins doing complicated tricks with a knife, the blade whirling around and around his hand in a blur. The Sangheili is making motions with his hands; the two seem to be talking about combat of some sort, probably hand-to-hand.

A ferret, a small fox, two teenagers, and a Potterverse wizard came rushing in.

"PPC-wide Halloween party?" Adder yelped. "We were gonna have one ourselves, but this is better!"

"Oi, Cai!" the ferret Kestrel whooped. "It's our RPin' debut! Why'd yer make me get outta me costume, eh?"

The wizard sighed. "Mainly because I don't want to have to carry you to Medical after you get shot for dressing up as Enoby Dark'ness Dementia Raven Way."

"What a shame," Deuce muttered.

Kieran stayed silent, periodically looking back to make sure a certain tattooed ferret kit hadn't followed them.

(I'm in a bit of a Harry Potter fan craze, so that might explain the costumes, I hope.)

--

Eesa and Sive strolled into the party. Sive was dressed as the female Draco Malfoy from "A Very Potter Musical" and Eesa had decided to go as Bellatrix Lestrange. Together, they held a life-size Mary Sue piñata filled with candy.

"We thought a party couldn't be complete without a piñata, so we brought one instead of alcohol," explained Sive simply.

Maudlin, being silly, runs through the door and shouts, "And I'm all out of bubble gum! Er... I brought Nightmare Revisited! Who's got a CD player?"

A pumpkin waddles into the room, stopping every now and then as if resting its tired legs. Small flippers can be seen beneath its orange bulk when it stands, and the top opens occasionally to reveal a black and white head poking a beak out of the seemingly hollow shelter.

Of course this is all nonsense. Pumpkins don't move. And penguins most definitely wouldn't hide in them. With this in mind, why are you even imagining this? You must be insane.

"Hey, hope we're not screwing the party by just being there," said Krisprolls
What' laughed. "Well, it only works during our birthdays. So, what do you want to dress up in?"
"U2!!!" said Krisp. "I'm Bono!"
"Well, I ain't tall enough to be no other than Larry, so that means there won't be no Adam," said South.
"What, does that mean you want me to be The Edge? I'm not Vulcan enough."
"So you're telling us you agree with those whacky fans who completely believe Bono's bullshit? Oh, don't worry, I do too. By the way, you can be Adam, and we'll tell the other people in the room our dear Vulcan is WORKING RIGHT NOW FOR FECK'S SAKE. DAMN VULCAN." Krisp was now completely involved in his role.
Five minutes later, Bono, Adam and Larry entered the party room.
"HELLO HELLOOOOOOOOOOOOOOOOOOOOOOOOOOOO" said Krisp.