Zombie Clock 

A clock that, after having been bitten by a zombie, uses blood-coagulation rates to calculate approximately how long until you will become a zombie. When the clock finally counts down to 0:00:00, you are craving brains.

Better pull that trigger before her zombie clock hits zero....

Zombie Clock by Asdf Jkl; January 4, 2011

clock zombie 

When a person's life is defined by what time it is.

These people work in extremely structured intervals and never waste time. One may wonder what will become of them if a large-scale worldwide catastrophe were to occur. Their agenda and a clock are their best friends, leaving little room for an actual social life.

It is a well-known fact that most college/university students live their lives like this, making campus a very depressing place to be.
There is a definitive line between being a clock zombie, and having 1-2 weeks of hardcore study sessions berore a test.

girl: "Hey, wanna go out tonight?"

guy: "Sorry, can't... I have to study for roman civilization for the midterm."

girl: "Isn't that midterm like, 4 weeks from now? Wow, you're such a clock zombie."

clock zombie by azn_ninja November 14, 2009

zombie o'clock 

That certain time way too early in the morning when you stumble around and moan like a zombie.

Dude, What time is your meeting tomorrow morning?
Seven A.M. That means I have to roll out of bed at "zombie o'clock"

zombie o'clock by I can't stand it June 18, 2011