As originated on The Simpsons, Gimbles is used to describe someone or something who has been fired, quit, or in general is just gone.
Example 1:
Agnes: Gimbels is gone, Marge, long gone. You're Gimbels.
Example 2:
Reece: Where's the beer?
Kenny: I asked Willie to pick it up since he works right beside the beer store, but he didn't want to.
Reece: Oh so Willie's Gimbles.
1) don't ask that gimble to do it, it'll never ever get done, hell will have frozen over first.
2) he tell's more lies than pinnocchio, what a total gimble!
3) dude, you like such a gimble, fix your goddamn collar.