sometimes at night we get scared after seeing scary things like 6-day old corpse. in the afternoon, we did not feel scared because it was a together experience. but at night, when we are alone, we suddenly remember one specific moment with the corpse. one specific glance or one specific look at the body that only we experienced. the memory then gives us the chill or even goose bumps. and we find it's pretty hard to fall asleep tonight.