It’s called hypnopompic hallucination.
Unlike with sleep paralysis, you can move and talk while still seeing it and it will last a few seconds up to a minute which can seem like an eternity.
It usually fades as soon as you turn on the light, but for some very few people it does not and persists even after turning on the light.
Here’s an example of someone who often experiences these and has started recording themselves: https://youtu.be/bEMGZNvETMQ
Why YSK: because it’s very scary and unsettling when it happens and since you can move you don’t believe it’s sleep paralysis and can’t explain it. This might explain many of the “monster or spirit at the foot of my bed” sightings that we often hear mentioned in horror podcasts.
I think I had this happen, though not in a scary way.
I used to live with my father in the country in the summers and one summer day I was woken up by him saying, “Get up and get dressed, we’re going into town.” It was probably 7:30 or something, but I did as I was told, threw on some clothes, and went and sat waiting for him. I figured while I got dressed he had wandered back into his room for whatever reason.
Later, my stepmother gets up and is surprised that I’m in my shoes and clothes so early in the morning. “What are you doing dressed?” “Dad woke me up and said we’re going into town.” “He’s in bed asleep…”
It was the first time I remember experiencing a hallucination.