Disclaimer: I do not own anything, except this plot, and the spells I made up.

This is a one-shot. Please review.

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Today was Tuesday, the first Tuesday of second year. The Marauders had Transfiguration on Tuesday. Sirius' face broke into an evil grin. Transfiguration was his best subject, so he could turn anything into anything. That was the fun part. Since he could turn anything into anything, he had lots of options...

The Transfiguration classroom was a large room, filled with small desks. When the Marauders reached the classroom, they selected seats near the middle. Professor McGonagall entered the room and silence fell. She was a rather formidable looking witch with a large hat, and her hair tied in a tight bun.

"Welcome to Transfiguration, second years," she said. "Today you will be turning beetles into quills. You flick your wand like this, and say Frenvata. Mr. Lupin, will you come pass out beetles?" Remus rose from his seat, took the box Professor McGonagall offered him, and started passing out jet-black beetles.

The class started trying to change their beetles into quills. James got it right on the second try, earning him a point for Gryffindor. Sirius, however, was a different story.

He could have turned his beetle into a quill with no trouble, but he had other plans. Instead of saying 'Frenvata,' he said 'Frintunteni.'

It had almost exactly effect he had hoped. His beetle turned into a blue banana. He grinned at James.

"James, I don't think I had enough to eat at lunch," he whispered, and began to eat his transfigured beetle. James started laughing, and Professor McGonagall looked over at them.

"Sirius Black, what do you think you are doing?!" McGonagall said, her lips thinning.

"He's eating his beetle, Professor," said James, as Sirius' mouth was too full to talk.

"He turned his beetle into a blue banana, Professor," James said, responding to a questioning look from McGonagall.

"Ah, Black, a point from Gryffindor. Please don't eat your next beetle, or I'll take five."

"Sorry, Professor. Won't happen to my next beetle," grinned Sirius innocently.

"Class, please continue with your work," said Professor McGonagall.

When Sirius got his next beetle, he thought, 'Why not? Why shouldn't I turn in into something even better?'

By the end of the lesson, Sirius had gotten a detention for turning his beetle into a giant stuffed pig, dressed just like McGonagall...

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Thanks for reading this, I would really appreciate it if you'd review...