Ferengi Mind Control was the supposed control of a human's mind by an alien species, such as the Ferengi. The term was first used by Faith Garland to explain to military authorities why she and Jeffrey Carlson had helped Quark, Rom, and Nog escape from custody after the three had traveled back in time from 2372 to July 1947. (DS9 episode: "Little Green Men").
On January 11, 1996, Shannon O'Donnell told Carlson that she was under Ferengi mind control when she helped launch the recently completed top secret, unnamed DY-100 ship from its launch facility. It was then that Carlson explained that his wife had invented the term, and that while O'Donnell would not be charged for the loss of the ship that she would lose her position at the government lab. (TOS novel: The Rise and Fall of Khan Noonien Singh, Volume 2).