I've had some visions like that, I don't know what they mean. A few years ago, I was in chemistry class when I suddenly zoned out, saw something confusing, and felt a very strong feeling of familiarity. It was a very fat lady with short hair in a big puffy dress, sitting in front of a table with some blurry things on it (cheese? a teapot?). She had wide eyes and flabby cheeks and her face was very reminiscent of a toad. I felt like I knew her well, like I saw her every day even though I had never seen her before. The feeling of realness and familiarity was so strong that for a few minutes I had trouble telling whether she was a real person or not. Then the teacher passed out a worksheet and I snapped out of it.

OP, I would advise you to learn to meditate. It should get you in a state of mind in which you could see weird shit more easily. Go to a quiet place, empty your mind, stare at a wall, and stop moving completely. Do this for as long as you can.