:demo mode: [Sun] n. 1. The state of being {heads down} in order
to finish code in time for a {demo}, usually due yesterday.
2. A mode in which video games sit by themselves running through a
portion of the game, also known as `attract mode'. Some serious
{app}s have a demo mode they use as a screen saver, or may go
through a demo mode on startup (for example, the Microsoft Windows
opening screen -- which lets you impress your neighbors without
actually having to put up with {Microsloth Windows}).
-- The AI Hackers Dictionary