Audi 5000

[Britney]

An adjective desribing one or more people who intend on leaving a particular place. Audis model 5000 sedan was plagued with a problem charcterized by unintended acceleration, in which drivers complained that the vehicle lurched forward when their foot was on the brake pedal. In reality, it turned out that the acclerator and brake pedals were unusually close together. This is why Audi 5000 is associated with leaving quickly, because that is what this vehicle did when some old fartknocker hit the gas instead of the brakes.

[Becky]

an announcement that youre taking off

a goodbye.

[Becky]

absolutely not anything to do with the cars poor service record.
Its a homonym. Im OUTTIE (im leaving), appended with the 5000 as the most popular make for the Audi car brand.
Youre welcome.