Totally slammed 'em on the FAA yesterday. As a member of AOPA, I'm aware of how the FAA works and how their rules and regs apply to pilots and aircraft. I know how airworthiness certificates and directives, STC's, and PMA's work with general aviation and with Part 121 air carriers and Part 135 business. That guy was throwing those terms out just to throw them out there but he had absolutely NO CLUE as to how they all fit under the oversight of the FAA.