What did I hear? ( not sure where to post this)

[Angrboda]

It could have been tapping, or it could have simply been the windowpane vibrating in a stiff wind. There's really no way to tell. It could also have been a hallucination, especially if you'd been kind of dozing off. A few weeks ago, just as I was waking up, I hallucinated a man at the foot of my bed. As I sprung upright in alarm, the phantom vanished like it went poof. Hallucinations when we are drowsy, waking up or falling asleep, are common. It's also not uncommon to hallucinate things when a relative has recently passed. I still occasionally hear one of my parents calling out to me from out of the blue. It's not a sign that I'm ill. That kind of thing is pretty normal. Perhaps you hallucinated the tapping and 'framed' it as coming from the window. It's impossible to tell what actually happened from this side of it.