I don't have any friends at school, and to be honest, I'm bullied every once in a while. Yesterday, I was made fun of in front of my whole class by one of the "popular" kids. He's way bigger than me and I couldn't really stick up for myself. But today I brought in ex-lax and put some into his milk when he wasn't looking. I kept my head down and tried to hide back my laugh as he stood up suddenly in science class after lunch. He started to sprint out of the class as farts bursted from his pants, but he tripped and hit his head on a table. He began shaking violently with his eyes rolled back. Apparently he was susceptible to seizures. To make everything worse, diarrhea started spewing from his shorts all over the room.
An ambulance had to take him away, and the principal made an announcement that they were investigating the matter and I'm really scared. I feel guilty. What do I do?