To enhance or to replace a well used word to make the situation or person to sound bad or good.
Or
To hope for god's wrath to be brought on the non-believers!
Or
For the person or object to be destoried in a mond of ash for what it has done
What you say when "God damn it" just doesn't suffice-- you need to damn it even harder. Firstused by Vegeta in Team Four Star's Dragon Ball Z Abridged, it has come to be commonly used to express one's inner torment.
Stronger than damn, stronger than god damn, and yes, even more powerful than god damn fucking, god damn motherfucking is for when you really god damn motherfucking mean it.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.