A combination of the words "under," "stand," and "that." It is commonly used in military training environments, on the streets (primarily the hood), and Louisiana.
I'm going to rip yo' soul out yo' chest and eat it for dinner, unastanat?
"Bro, haven't you submitted your UCAS choices yet?"
"I don't know whether to go with Bath, Lancaster or Warwick."
"Dude, stop UCAStinating and choose one."
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.