It doesn't happen often, but we can sometimes find ourselves in situations that didn't seem real even as we were going through them. When it's all over, we can only turn to our friends in disbelief and ask, "did that just happen?"
And while what we experienced may sound like the kind of thing a kid would make up during recess to get attention, we have enough witnesses to confirm that it was as real as the eyes we saw it with.
And some people had enough lucidity to capture their bizarre encounters on camera, not that it likely stopped a bunch of people from calling them fake.