Tl;dr: owning and pranking other people with a wireless mouse is hacking and illegal.

Okay, so I wanted to fuck around with some people one day so I decide to bring a usb wireless mouse to my secondary school.

My first target was my science teacher (was a bitch). I got into class before everyone else and plugged in the small usb receiver then sat down and pretended as if nothing had happened. The lesson starts and here is where the fun begins. Her screen is projected onto a whiteboard so I could see what she was doing. Under the table I had my mouse and every time she tried clicking a dialogue, I would move the mouse ever so slightly so she would miss. After a couple of times, she started to get suspicious, maybe even slightly paranoid; my friend keked. I never got found out by that teacher.

Fast forward to next lesson: I already planted the receiver in my next victims pc. The victim was a bitch I hated so much at the time. She would used to bully me to an extent and was a loud noisy bitch. I really didn't like the person. I digress. When the time was right, I went to her folder, highlighted all her files, right click, hover over delete. But I wasn't so shallow to delete her stuff. That's not the person I am. I guess it was more of a threat really. But the teacher saw what was going on and she saw my wireless mouse and connected 2 and 2 together. She called the behaviour people, removed the reciever and the mouse from me.

Within a few minutes, I was in a room on my own talking to this woman talking about how hacking is bad/illegal and she knows I'm into it etc. But I wasn't hacking? I did no damage and was pulling a prank. Bitch didn't listen to me. She made me sign this document which said that if I fuck around with computers, I could be expelled and I won't be allowed to use to computers again or use them with many restrictions.

I didn't really care. To this day, I still don't have my mouse back. :(