Monster under my bed
The monster under the bed is a variation of the bogeyman which has existed for centuries, in various guises, all around the world. It is likely that the bogeyman legend originated simply as a behaviour deterrent for children. For example, if a child doesn’t go to bed then they might be told that the bogeyman will ‘get them’. Not exactly grade-A parenting, but a common technique nonetheless, and one that is no doubt still used.
We exorcised our own monsters. We expelled them from under our beds and expose them you your eyes.