Replying to Ouija Board

So check this out, me and a couple of friends were bored today so we made a getto ass Ouija board out of cardboard. We were in city market at the time so we decided to test it out there. So we sat down in the middle of an isle and did some stuff a website told us to do. This is were it gets creepy, so we all put our finger on the triangle in the middle and started asking some questions. Right after we would ask them the triangle would sure enough move across the board to letters. You could look at everyones finger and tell that no one was moving it. Some questions we told it, it would do nothing and others it would say something random. A few times though it would move across all the letters and spell out rape or some shit like that. What do you guys think of Ouija boards, do they work, are they fake, do you have any experience ext...?