1 definition by The IzzleMann

The moments directly after waking up from sleep (usually, only up to an hour) where you can't speak properly and have an inability to perform simple tasks like make your morning coffee.

Extended periods of zombie mode can also occur after a bad night's sleep and can last most of the day. Symptoms include not being able to function properly throughout the day and general malaise.

Zombie mode is comparable to a hang-over but it doesn't usually occur as a result of alcohol although zombie mode, combined with a hang-over is a potentially deadly combination.
"Man, I didnt get to sleep til 5 am this morning. I've been in zombie mode all day since getting up."
by The IzzleMann September 9, 2008
Get the Zombie Mode mug.