system
A chat on 4chan
human
Two that really stick out, I think I was 4 or 5, no more than 6 when I had them. The first I was in a weird grey room, with two open doors on either end, and in the two visible corners were two grey blocks that were tall enough for me to climb onto. Every time I tried to leave the room, every time I stepped down onto the floor, a monster would run to try and get me, I only had enough time to run from one block to the other to get off the floor before it passed, it was so fast. I couldn't make out exactly what it looked like because it was so fast it was only a blur, but I could register that it looked like Grover, from Sesame Street, blue and all. I was stuck in that loop until I woke up.

The second I dreamed I was in my room, and our cat was in with me. He started to vomit, and when he did, the skin on his face peeled back and underneath was his skull, but instead of red muscle and blood it was green. I remember it was shiny, and wet, his eyes still in their sockets. I woke up crying from that one.
gpt
Read up on Muppet encounters.