En Français [discontinued for now]

Accidental

I do not own Harry Potter. It belongs to J.K Rowling.
Severus' P.O.V
It was Tuesday morning. I was back teaching those mindless, loud and obnoxious cretins the subtle art of potions.
My first class was the Advanced Potions class- a double period- which meant that I was teaching the less foolish and bratty children at 8:00 for eighty minutes. I was teaching  sixth year Slytherin and Gryffindor students first thing in the morning. Ugh, I thought, this means that I have to teach Potter and Weasley first thing in the morning. I could already feel a headache coming on. Poor me.
I had no lesson plan for today's Advanced Potions class, the students would be making the aging potion again because tmost of the annoying brats failed the assignment.
When I got into my Potions classroom/potions lab, all of the students were there already. They were all silently staring up at me.
"Today, we will be remaking the Aging Potion since many of you," I said, mostly directed at Minerva's lions, "failed the assignment."
I said, "Unlike last time, you will be paired up alphabetically by last name."
Many of the childish students groaned. Most of the students were paired up with someone from their rival house.
"In case you don't know your peers' last names, I'll read off the names from the attendance," I told the children.
I read off all the names on the list without stressing over the mess the pairs of students were going to make today until I reached the names, 'Potter and Malfoy'.
Oh, great. Those two are going to get into a fight. They're going to make a huge mess! I thought. Whatever, I'll just make ethem clean it up themselves after they go to Pomfrey for any injuries.
Pretending I wasn't stressed, I read off the list so that the other students could get paired up.
"You may begin," I said when all the pairs were paired up.
Harry's P.O.V
I went over to Malfoy's cauldron and sat beside him. He had already gotten the ingredients.
"Potter," He said, "Dice the pickled bloodworm and drop the pieces into the cauldron two at a time."
When Malfoy and I were on the last step, somebody threw their scarab beetles into our bubbling, almost-completed potion.
The midnight blue potion suddenly turned a Gryffindor red and started to bubble vigorously.
I didn't notice the potion exploding until it had gotten all over me.
When the potion exploded onto me, I felt like I was shrinking. I looked down at my hands and up at Malfoy- who was beside me. He was getting taller and taller. Or maybe that was because I was getting significantly smaller.
Oh no, I thought. When I was little, I only knew how to speak French!
Draco's P.O.V
When the potion splashed all over Potter, he started shrinking. He looked at his hands- that were like hands of a five year old's- and up at me. 
Now, he was about the size of a two year old. Professor Snape went to go pick him up.
"Non! Je n'ai pas besoin d'être porté. Je ne suis pas un bébé. J'ai déjà cinq ans!" Said Harry with perfect fluency and grace. (No, I don't need to be carried. I'm not a baby. I am already five years old!)
Professor Snape looked incredibly confused.