I remain skeptical like Smerd said (brought to you by Hasbro). It's a piece of wood with letters, numbers, yes and no on it that could be made by anyone having the right skills. It's not some magical object. Why would a ghost only respond when you want to communicate with it with such kind of board. Could a paper drawn Ouija board work as well? Would it work anywhere you are or you have to be lucky to be in a place that has a spirit.

That's maybe why he is laughing with you as that's exactly not how to do it