Federal Magistrate (Australian Post-nominal) -Federated States Of Micronesia (postal Symbol; ISO 3166 Digram; FIPS 10-4 Territory Code) -Field Manual - Flight Manager - Frequency Modulation (electronics)
F*cking Magic. Used To Explain Something Complicated, Generally To Someone New Who Has Asked A Question That Would Take Too Long To Explain. "How Does That Work?" "Oh, It Uses FM." Also Used In Reference To "Field Manuals", Which Is A Slang Term For Porn Magazines (Playboy, Penthouse, Etc.)