About ten years back, I was lying in bed attempting to fall asleep. Just as I closed my eyes, the was a large boom of thunder that took me by surprise, as it was not signing outside. I opened my eyes and saw… Something.. Floating above me directly above my face. It was an ashy grey color with these black lesions all over its body. It had a very round head, large black eyes and an extremely wide mouth. It’s body was crab-like, in that its appendages were strangely articulated. I let out a blood curdling scream that I didn’t even know I was capable of. As I screamed, it flew upwards towards the ceiling and its appendages bent the opposite way and its head twisted around 180° so that it was still looking at me. When my family finally ran into the room to see why I had screamed and flipped on the lights, I watched this thing slowly fade away. I’ve never seen it again and I still have no idea what the hell it was. I did sleep with the lights on for several days after though.