n: the act of masturbating with a level of enthusiasm and vigour that one can only achieve with the knowledge of the impending end of the world.
Craig sat quietly in the room while his undead friends and family members scratches at the door and the last of the battery power drained from the torch. "Fuck it!" Said Craig, "I'm busting out an Armageddon Wank before they break in."
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.