One day, at graduate school, the power went out in the building. All of the halls and stairwells were in the interior of the building. So, when everyone went to leave the building and shut their office doors, the halls and stairwells went completly pitch black.
If you had asked me before that day if I was scared of the dark? I would have said no and it would have been a lie.
Eventhough I spent most of my life at that time in that building and could have navigated it with my eyes closed, I was scared.to.death.
One of the post-docs had a flash light and came around and got everyone. H was at the rear of the group with a lighter. The plastic on the lighter was melted by the time we got out of the building.
That was scary.