When I was a kid there was a movie called "It's Alive" and the sequel, "It Lives Again" with little genetic demon babies that would kill everyone. A scene where one of them crawled up the end of a bed under the blanket while a guy slept and ripped him to shreds. I always tucked my sheets and blankets under my feet so no critter could crawl up and get me. The first time my cat did that I slept on the couch for weeks.
As an adult, Obama & Whispers are the only Boogymen that keeps me awake at night.