I and a friend were walking inside a dark place. I think it was a cave. We could barely see anything, except a dark grey-blue fog. As we kept on walking, we saw two lights coming from a couple of weird creatures. Those were the only lights in the whole place.

When we made it to the two creatures, they were just standing there, looking at us as if they hadn't seen anything like us before. The confusion was mutual; Me and my friend had never seen anything like the two of them before, either.
The first one was very docile and curious. It wandered a bit closer to get a good look at us. It had completely white eyes that looked very empty. I reached out to touch its face. It didn't mind that at all.
Its skin felt odd. It was hard as rock, smooth as glass and slippery as ice, though still completely dry.

- "Hey, look at this guy!" I heard my friend yell and I looked over to the other creature. It was identical to the first, except its eyes looked to have some sort of compass-like symbol in them. I left the one with the empty eyes to go get a look at the eyes of the second one, but as soon as I got close it sounded a scream that completely paralyzed me and distorted my vision. It sounded like the creak of a rusty old gate, however so loud that if I heard it in real life, I would've become deaf in an instant.

I couldn't stand the sound, so I forced myself to wake up. Even though I was awake, I was still unable to move and could still hear that deafening screech ring inside my head. After a few, maybe ten seconds, I could finally move again. I took a few minutes to just calm myself down and think aboot what the Hell just happened. Then I went back to sleep. I was of course a bit afraid of going back to sleep after all that, but I was tired, so there wasn't much choice.

I have no idea who that friend was, either. I had never seen him before.
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2.5 hours in MS Paint.