Irrational fear

I brought my laptop to school to do some work cause I was going to have some time.

While searching for an outlet for my computer in one of the less visited buildings, I came across a whole zone with absolutely no people. There were 3 empty and dark classrooms. I went into one of those and plugged in my laptop.

It was completely quiet. It didn't even seem like there were students outside the building. It was as if the building was closed and I had snuck inside.

Precisely because of that I kept thinking I was going to get caught...caught? It's not like I was somewhere I wasn't supposed to be. The school is for all of us. Yet I kept feeling as if I was hiding from the authority (if there were one).

At one point a cleaning dude took a peek inside the room and saw me sitting in the dark by myself. I felt like getting caught red handed...until he just waved at me and left.

Pretty weird...