FGJ is a rarely used abbreviation for the saying "For Great Justice" which first appeared in the NES videogame, Zero Wing. In most cases, one must take off every zig for great justice, or FGJ. It's usually used in a positive manner, like an encouragement of something you strongly agree with.
FGJ is much like FTW, or for the win.
FGJ is much like FTW, or for the win.
Random Guy #177: Let's get some food at that suspicious run-down shack over there.
Random Guy #42: Run-down shacks FGJ!
Random Guy #663: Dude, what the f--
Random Guy #42: Run-down shacks FGJ!
Random Guy #663: Dude, what the f--
by Yams September 6, 2006
FGJ on your project!
by solo sapiens February 4, 2012