A/N: Since I imagine this would be an ADORABLE idea, the story will continue with Snape and Harry as unicorns. Like, MLP style unicorns. Good luck with that, guys!

"Concentrate, Potter! You shall never learn defense at this rate!"

Harry growled as he stood from the floor. That was yet another spell blocked by the potions professor, and in return Snape was quick enough to let fly a stupefy, knocking Harry to the ground. Once the younger wizard was on his feet, Snape patiently waited for the next spell.

Meanwhile, Harry rattled his brain for a spell, any spell that would take Snape by surprise. He remembered one that Hermione told him about, but she never mentioned what it did. What was it called? What was the name?

"I'm waiting, Potter."

That did it. Harry let loose the spell, and out of his wand came a rainbow of colors. Unfortunately, it seemed the rainbow came from both sides of the wand, hitting Harry squarely in the chest. The younger felt weak, and aside from the lightheadedness he felt a stabbing pain all over his body, especially in his limbs. The last thing he saw was his fingers disappearing and morphing into one, before he blacked out.

"…ter? Po…er! POTTER!"

Harry's eyes flew open as he was able to hear his name being screamed in the familiar voice of the potions' professor, and the boy looked up with blurred vision at his adoptive father.

"Snape? W-What happened?"

"Simple. You cast a spell you had no knowledge about, and now we are stuck in a…less than desirable position."

As Snape spoke, Harry's vision cleared, and the boy was able to see his teacher was now…a unicorn. A light gray unicorn with a jet-black mane and tail, and a picture of a vial of bubbling red liquid plastered on his butt.

"Potter, would you kindly stop staring at my arse? My eyes are over here."

Harry blushed as his eyes darted to Snape's, and seeing the state of his teacher, the boy could not help but giggle.

"I do not know why you are laughing. You are no different."

Harry immediately stopped his fit of giggles to consider Snape's words. He stared at what was once his hands, and saw only a golden hoof.

"W-Wha-!?"

"If you are planning to scream, please do so in a pillow, your voice is annoying enough as it is."

"S-Snape…what are we going to do?! I can't let Malfoy or my friends or….really ANYBODY see me like this!"

"Potter, that spell is arcane. I can try to find a counter-spell, but there is no guarantee that there is one. For now, we will have to cope with these bodies and live out our semi-normal lives."

Harry groaned as Snape walked down to his lab, eyeing the vial on his adoptive father's flank.

"So…what's with the butt tattoo?"

R&R!