I was deathly afraid vampires were going to sneak into my house at night and give me the S U C C. So I used to sleep with a pillow around my neck, as if ol' Count Drac couldn't just yank the pillow away. I also fully believed vampires couldn't come inside unless invited in but that logic didn't get in the way of me still believing they were going to break in somehow.
Being eaten by the toilet monster that made loud angry noises after flushing. Didn't result in anything, but I do remember hurrying out of there for a few years
I remember a fear of thinking a snake was gonna come up and bite my b-hole.