I saw a ghost once. It flew out of the hallway.
Seriously. It was like a burst of light, flew past my head as I was turning on the light switch, and I thought it was the bulb popping/burning out. But it wasn't the light bulb, it was fine and worked the next day.
Fletch saw it too, so it wasn't the booze and weed.
In fact he saw it from a different angle than I did. It was like a ghost bird thing.
I wish it would appear more often.
