I was on a walk in the cemetery, passing by a memorial to veterans buried in the cemetery. In a circle of recently trimmed bushes, I saw what seemed to be a person picking up bush trimmings from the ground. They were sort of androgynous and on the shorter side with light brown skin and poofy dark hair a bit above their shoulders. I thought maybe they were an employee, because they were wearing what a landscaper might (jeans and a T-shirt), so I called out to them, asking if they happened to know where the oldest parts of the cemetery were. Slowly, they turned to face me with their eyes open very wide. They didn't walk towards me, but all of a sudden they were closer. It was really freaky-it seemed as if, all of a sudden, my brain didn't want to let me perceive this person. They weren't transparent or anything. It was like static, it was like an error code message, it was like they were there and not there, it was like I was walking a line I hadn't known existed. I got very hot and faint, and I heard someone say "you shouldn't be here, leave, hurry," and then all of a sudden I was back at the graveyard entrance crying and shaking and throwing up with no memory of having gotten there. What was this? I hadn't been drinking or smoking or anything, and nothing like this has ever happened to me.