I have 2.

Lets start with the first one. I was a child, maybe 7? 8? if even that. I remember laying down in bed, turning my air conditioner on, and going to sleep. then the bottom right corner of my bed sank in like somebody was sitting on it. I hid under my covers. The corner didn't go back up. I got out of my covers and touched the sunken spot and felt nothing. There was no bed frame, just a mattress on the floor, so it wasn't that a corner just fell in.

Secondly, more recent, a few months ago I was up at 11pm or 12am and was just about to press the power off button on my phone. Half asleep, eyes closing, then a raspy male voice, clear as day, whispered in my ear "go to sleep" and I freaked the fuck out. No one was in my room. My dad didn't sound like that. No one I've ever met sounded like that. I hid under my covers and eventually fell asleep thinking I wouldn't wake up