I've always had some light sleepwalking tendencies. When I was younger, that entailed walking though the house, but as I got older, it became more localized, so at least I don't have to worry about falling down the stairs.
It's interesting how this works. During such episodes, I perceive my surroundings, but it's like a dream is overlaid on top which changes the way I think. I believe certain things are fundamentally true, just like when you're in a dream and, say, your job is entirely different from your real one, but you don't question it because it's your reality in that dream.
It doesn't happen often, and even then it's usually something annoying that keeps me up at night. But sometimes, I "wake up" and I'm convinced I can turn into any creature at will. So I try doing that for about a minute, until I become aware enough to realize that it's just a dream. That short time until then is pure freedom.
I've had dreams where I wasn't human either, but none of them came even remotely close to this feeling. And neither can pretending (via VR or roleplay or whatever), because then I know deep down that I'm a human who can't possibly become something else.
But during these sleepwalking episodes, I truly believe, from the bottom of my heart, without any doubt at all, that I can turn into a creature. I can't describe just how good it feels to be rid of this deep-seated awareness even for just a few seconds.