An alternative to the phrase, "God damn it," first popularized in the old cowboy movies and radio shows where cussing was severely limited. Decades later used in the Joss Whedon show Firefly and the accompanying movie Serenity.
People that nobody likes, or even sides with. Anyone can be a gorrammedic regardless of age, gender and race and the term can be used even for a slight downside to insult the person.
While the term originates from the combination of "Gorram" and "Medic", it has nothing to do with any of those words' original meanings.
A: Did you hear C is still using Windows 10 instead of Hannah Montana Linux?
B: Gorrammedic bastard
Tom: People have been hosting bots to poison player's multiplayer experience
John: Gorrammedic bastards