oujia board

Kymmu

My son brought one home that was left at high school by a girl who got freaked out.
As ridiculous as it sounds after reading all of the "true" stories on the net I'm not sure I want it here either!!
My rational brain knows it absurd, but last night I was woken by 10 clear and audible perfectly timed knocks in the living room ( where the board is) and I didn't want to take a look!!
In the light of day I feel silly.
Does anyone have any stories? ( preferably true)