You made a bet with your friends, and so you had to throw a firecracker into the teacher's toilet at the institute. No one would have thought about you if it hadn’t been for what happened after. When you did this, you immediately left that place, literally after you, your director looked in there, and before his eyes, the toilet exploded right in front of him. They started to find out who did it, and your friends turned you in, but they didn’t say anything about the dispute, it was as if you accidentally walked by and threw that firecracker. The teachers and students were amused by this; something like this rarely happened at your institute, only because there was nothing to break. But Makarov became enraged, because the toilet exploded right in front of him.

So you were called into the director's office. "Well, why did you do that?" asked Vladimir, “this could threaten expulsion, are you having fun?”