What is Fortune Telling Fraud?

Legal Definition
Fortune telling fraud, also called the bujo or egg curse scam, is a type of confidence trick, based on a claim of secret or occult information. The basic feature of the scam involves diagnosing the victim (the "mark") with some sort of secret problem that only the grifter can detect or diagnose, and then charging the mark for ineffectual treatments. The archetypical grifter working the scam is a fortune teller who announces that the mark is suffering from a curse that her magic can relieve, while threatening dire consequences if the curse is not lifted.
-- Wikipedia