" GHOST"

I am 17 years old. One night me and a friend of mine were at my girlfriend's house. Her sister came into the room we were in and asked where her lip gloss was. We started searching for it, when my girlfriend and her sister looked under the sofa, they found my girlfriend's old Ouija board her mother had hid from her.
We were bored so we decided to mess with it. At first it didn't work because we were sort of joking around about it, but when we got serious the fun began. We first asked it if it was good or bad and it went to the b, so we took that as being bad. Then we asked it's name, it said the name of my girlfriend's dead grandpa. Same deal with the last name.
It said it died of cancer, which he did, named the correct age, and said he was her grandpa. To this day i believe the Ouija board is for real.