There's a Bogeyman in the Closet

So guys...
What things were you scared of as children?
Or things you believed in then, that you don't believe in now?

I mean things like... monster under the bed, bogeyman in the closet, tooth fairy, mushroom rings?

(This part is important!) What were the stipulations associated with it?

Like... The monster under the bed would only eat you if you hadn't brushed your teeth, or couldn't get you if you were wearing shoes. The bogeyman in the closet was afraid of light. The tooth fairy only came when you were asleep, or only took "good/clean" teeth. Etc.

Sorry part research, part curiosity.
This doesn't have to be stuff you believed, but things you heard that others believed.
I'm trying to get some ideas.


EDIT: Whoa! Whoa peoples! I didn't mean to ask for your genuine scary or scarring fears here!
I just wanted the, "When I was a little kid, I believed a monster lived in the tree. If you walked under this tree while whistling, the monster could grab you."

I didn't mean to get the real fears. I wanted the things that went bump in the night when you were in elementary school and such, and why you thought (at the time) they didn't get you. What you could do to avoid them. As well as the good things like Santa and the tooth fairy.

The closet monsters, dolls and statues coming to life, Santa, dead people behind shower curtains, aliens and skeletons under the bed... these I can use for ideas.
I didn't mean for you guys to pour out your real fears here.

These were supposed to be childhood folklore, bedtime and ghost stories.