when you have to dookie really bad, and you hold it and hold it, and your running (pun intended) into the bathroom, and you sit down, and the dookie shoots from you like a bazooka, with out a second to spare, and you think "wow, that was a dookiebazookie"
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.