A waking nightmare. For context, I had come home from work around 11pm and stayed up to clean my room a little (at the time I was living with my family though nobody was home). I made some progress before deciding to settle down for the night, so I got into my pajamas and went to turn the light off. The MOMENT i flipped the lightswitch, the quality of my room changed. The air seemed to grow thicker and louder as though everything around me was buzzing. I was uneasy but i got into bed regardless and tried to sleep. It's hard to describe the experience of the room at the time but the intensity of it grew by the second and my unease became terror. I could feel presences around me through the buzzing of the air and they assaulted my senses. I was sat up in bed at this stage but I couldn't bring myself to open my eyes. At some point I started moaning and crying out, and this somehow helped me to see. I "saw" two beings, eyes still closed, and detected their intentions through the air. The first was a stout grey man dressed in a suit, stood in the corner by my window. His proportions were entirely off and he seemed too angular- the closest comparison I can think of is like a guy from minecraft (I know..). Just a couple of cubes and prisms shaped vaguely like a man, but with distinctly human facial features, skin, hair, clothing. His presence was welcome, soothing somehow, like I could tell he meant no harm. The second presence seemed to be the cause of my distress, and what I had felt when I turned off the lights was simply its approach. It lumbered down the corridor toward my room (which was at the end) and perched in the door-frame, too large to fit through. This one is hard to describe, a huge emaciated figure with uncountable animal limbs. Its head was birdlike, with what i perceived to be a long beak covered in skin. It was pale and hairless, crawling on four large human arms. With each step it took closer to me, the buzzing of the air grew louder to the point of sensory overload, it was as though the air was screaming. I think I was screaming myself by the time it reached my door, and I felt multiple hands pulling at my hair and clothes. It sat there for a few moments, all the while I cried out, trying to swat at the numerous limbs grabbing at me. It stopped as immediately as it started, my sister had come home, heard me screaming and rushed to my room. She turned the lights on and it all disappeared, along with the buzzing. She asked me if I was high, I said yes. I wasn't high. To clarify, at the time I was not on medication or drugs of any sort (nor did i have a history with either) and had never experienced any vision, hallucination or paranormal experience anywhere near this intensity before, I have since.