It happened in last class potions on Friday with the gryffindors and slytherins. They were brewing potions that would reverse minor spells. Class was going well, as well as can be expected anyway. The two houses were not getting along by any stretch of the imagination. But the class was almost half over and insults had been kept to a minimum and no one had yet come to blows. That ended when Professor Lupin came to discuss something with Professor Snape. Normally the class would have still remained relatively well behaved with Snape absent. At the present time however Harry and Malfoy were harboring grudges from a disagreement they had had earlier that day. Insults about grades and appearance quickly degraded into those targeting friend's parentage and sexuality. It wasn't long before the boys were circling each other with their wands out while being cheered on by their respective houses. The only one who was trying to stop them was Hermione. Luckily for her, or perhaps it was unlucky, Professors Snape and Lupin and Professor Lupins "pet" snuffles walked in just as the first spell was cast. Snape reacted faster than Hermione would have thought possible. One second he was at the door then he was beside Harry pushing him out of the way of the stupefying spell. Snape got caught with a glancing blow of the spell, not enough to knock him out just to knock him over. He hit Hermione's and Neville's table tipping the cauldrons on it. Had he been hit with either of the students potions by itself he probably would have been unaffected. As it was the potions (Hermione's perfect on and Neville's botched one) mixed together very well before spilling on him. There was a flash of white light. I didn't completely go away but faded until it seemed to be coming from Snape himself. Snape looked up and the whole class seemed to take a sharp intake of breath at once, Snape was beautiful. It wasn't that he changed that much the only noticeable difference was the fact his nose was no longer hooked or overlarge. His skin had gone from being sallow to smooth and pale. His eyes were still almost black but instead of being brown, they were now an extremely dark blue. His hair was still black and still greasy but was different, special somehow in a way that couldn't be described. Everyone was staring at him, even the men, even the gryffindors. He stood up shakily "Class dismissed" He whispered hoarsely.
No one moved even the slytherins. Lupin went to help him stand up but he brushed him off.
"I said class dismissed" Snape said in a severe voice more akin to his usual manner but still no one moved.
Had they not all been staring at him so intently they might have missed what happened. Snape went to move and almost fell. He caught himself but the movement caused his lank hair to fly up for a moment revealing his ears. Ears that were pointed.
Lavender Brown cried out rather excitedly "Your an Elf!"
Every one in the classroom gasped (even 'snuffles') except Snape who blanched and Lupin who grabbed his arm and steadied him as he straightened him as they made for Snape's office.
"Class is dismissed" he said calmly "NOW!"
That last word seemed to snap the kids out of their trance and they left the class followed by one very baffled dog