Also expressed as GDB.
It is an expressed feeling of rage when something you enjoy completely blows up in your face.
From the movie Beerfest, when Landfill explains how he got fired from his job at the brewery because he loved beer so much that he drank 40 bottles off the line.
"Ahhh, I love playing games on my computer."
*Blue Screen*
"GODDAMN BREWERY!!!"