One who claims they know a lot about a subject but in fact all they know is information they have read from a magazine, google or recycled from friends and has limited personal experience in the subject. A knowledge fraud often regards their "knowledge" higher than someone with experience in the subject and is typically egotistical. A knowledge fraud will sometimes try to dominate a conversation with someone that happens to be more experienced in the topic and will unwittingly embarass themselves and be caught out as a knowledge fraud. Sometimes responds to a question with "why dont you just google it"