Doubt

As I laid there, on the couch, half naked, the roof started sinking and everything seemed to lose its shape, or else: at the precise moment that I turned my look away, it would gain life and begin to conspire against me, I felt it. There! Out it went. I stared on the very end of the couch towards the floor and a cliff is what I saw. Made of worn bricks and a small pipe in the very middle of it, from which fell constantly water into the abyss. Flowing from nowhere, going downhill. As well was I. The great wall started trembling. A sudden feeling made me want to jump, and...