An expression used to refer to prophecies or words of knowledge, gifts of the Holy Spirit, that are extremely specific and give details about the person about whom the prophecy or word of knowledge is given that could not be known naturally. This term is used as slang in some Pentecostal, Charismatic and so-called 'Third Wave' churches where prophecy occurs.
That preacher I met on the streets last night told me all about myself. He got a word of knowledge that I had a problem with my wrist, and prayed for it and it was healed. His prophecies were so specific. He read my mail.