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1.
Orgasm like satisfaction directly resulting from one or multiple sources of ominous information.
Man, that thousand point dow drop just gave me a doomgasm.
by LATOC4LIFE May 20, 2010
 
2.
Doomgasm (n)

What the preppers who have been camped out in their bunkers, monitoring the internet since 1999, sure that SOMETHING is about to happen, are currently experiencing.

I'm reading about this here Swine Flu/Monkey Rabies and I think I'm a-havin' a Doomgasm.

Giggity.
by GeneralisEMO April 28, 2009