Cookie Monster is a scary story or urban legend about a doll that is said to cause children nightmares.
In 1980, there were many reports of children having nightmares brought on by sleeping with a Cookie Monster doll. What really got people worried was not that the children were having nightmares, but that all of the nightmares were exactly the same.
The children would wake up in their beds in the middle of the night and in the darkness, they would see a man staring at them from the shadows.
Over the years, this happened less and less. However, children who own Elmo dolls are now said to be experiencing these nightmares…