FE: acryonym = ? - Page 2

Actually it apparently stands for Fake Double, basically you make the protoss think that you're going for a double factory build and that vulture+mines are on their way, which will cause the protoss to leave you alone long enough for you to get an early expansion.

c/p'd from here
http://www.teamliquid.net/forum/information/46744/_Article__Shinhan_OSL2_Recap.html

A mutation of once notorious Gundam Rush, similarly, FD Terran pushes the dragoons stationed near Terran base entrance with 4 marines + 1 Tank, but this time beguiling the opponent Protoss that imminent vultures are on their way with their mines backstabbing the retreating dragoons. This action makes Protoss to pull their dragoons to their base in fear of losing dragoons, and buys the luxury for Terran to an early expansion. Cha Jaewook was credited for reviving and upgrading this ancient build and demonstrating with some degree of completion. Soon after, FD Terran brought a new paradigm(as all of you know well) in TvsP, a stale match for sometime.


Bah, FS got his post in before my edit.