Manyissues101's prompt for me: marauders, the invisibility cloak, involving the words "nasal cavity" as often as possible.

This is what was born. Going to multiple, short chapters.

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"So basically, if we use the invisibility cloak—WILL YOU SHUT UP PADFOOT—to wait in on the class before us, we can get the answers to the test without getting caught!"

Sirius, who had been enthusiastically clearing his nasal cavity, threw away the tissue and smiled at the plan complacently.

"That… doesn't make any sense," Remus informed him slowly.

"Why not?" James demanded, affronted.

"It's a Transfiguration test. You know what you're supposed to do, it's just a matter of doing it."

"Oh." James sat down, crestfallen.

"Looks like we'll just have to fail," Sirius said cheerily. "Pass me a tissue, will you, Wormtail?"

Peter complied, staring curiously at Sirius's nasal cavity..

"I don't believe this! My cloak has to be good for something!"

"Just face it, Prongs. The only thing you've managed to do with it is show Padfoot and Wormtail a good time by letting them hide with you in the female prefect bathing room."

"And a damn good use, that!" Sirius exclaimed heartily. "You know what they say about girls with glasses."

Peter turned slowly to look at Sirius. "What do they say about girls with glasses?"

"Well, that they're hot."

"Oh."

"Look, the point it, it hasn't benefited anyone yet! It's an invisibility cloak! It should have saved my life by now!"

"Yah, where're those assassins when you need them?" Remus responded sarcastically.

James's face took on a strange, demonic light. "No," Remus said desperately, "oh, no…"

James leaped onto the table in front of the fireplace. "Attention, my Gryffindor compatriots! I, James Potter, am about to embark on an adventure of the grandest nature, and am in the most ultimate, desperate need of a valiant individual, willing to risk death and bodily harm, but assured of eternal recognition and true rectification of his or her immortal soul! Yes, my noble companions—who want to kill James Potter?"

Several hands shot up across the common room, but Sirius stood on a distant chair before anyone had decided how much they were willing to risk for eternal recognition.

"I, Sirius Black, will completely and nobly fulfill the requirements entailed in this truly grand and memorable endeavor, never failing or shirking my duties, and upholding the honor which I am fully aware this opportunity is!"

Peter's eyes had grown wide, caught between terror and excitement. Remus had laid his head in his hands. "Why, God, why…"

"I will pursue you continually and with the greatest stealth," Sirius continued. "You shall never be assured of safety and shall never possess true peace!"

"And they shall say of Sirius Black forever: He was a great man!" James shouted.

Remus groaned. The common room cheered. James and Sirius walked arm-over-shoulder up the stairs to their dorm room.

A moment later, Sirius tripped James down the stairs, then threw a book at him.