Stems from the ctrl-z button on computers that undoes the last action performed. The term Ctrl Z has also made worked its way into popular usage to mean undo, fix or to take back, as seen in websites like
Ever wish you could Ctrl Z everything that goes wrong in your life?
by Mantilla December 30, 2011
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The most used key combination to undo the previous action the user has made.

The use of a key combination to easilly perform a command was first introduced by Macintosh, using the Q, Z, X, C and V buttons, in combination with the Command key, for the actions quit, undo, cut, copy and paste (in that order).

It was passed down to other Operating Systems, but with other operating systems using other keyboards the Ctrl (Control) key was used, since they didn't have the same control key as a Macintish keyboard does.

Also see "Inside Macintosh. Volume 1" Chapter I page 53, for the first ever mention and explanation of this command.
You see a person working on an image in Photoshop "Oh, crap, I made a mistake! Undo!" The person presses Ctrl+Z to unto his mistake
(NOTE: In Photoshop Ctrl+Z undoes all recent actions made with the tool selected, Ctrl+Alt+Z however undoes the last action only, yet can be pressed repeatedly to undo several previous actions)
by AARST July 31, 2004
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A desperate attempt to fix a borked situation.
A: You told her she was a dumb cow with a socially irresponsible haircut?
B: Yeah, I spent the rest of the weekend Ctrl+Z'ing that shit from seventeen directions.
by sv-1 August 29, 2007
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What you will inevitably press after inserting an image into Microsoft Word.
Person 1: "Crap, I messed up."
Person 2: "Ctrl-Z, bro"
by randomtechguy January 4, 2020
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The act of vomiting. Ctrl+z means undo. Vomiting dinner or the act of purging food is mostly done by people with bulimia. This phrase originated from the eating disorder community.
I ate a lot today. Time to ctrl+z dinner.

Stop using ed language. Instead of saying bulimia, say ctrl+z dinner instead.
by rei0000 October 7, 2020
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Ctrl + C/V/Z (CtrlCVZ, Ctrl CVZ) is the worlds only good sonic sprite comic featuring full animation and viewable by an IQ that, on average, is than that of a breakfast bar.
Ctrl + C/V/Z is a sprite comic, but... good.
by MaxX Unlimited September 16, 2003
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Ctrl + C/V/Z
Using more control functions daily thatn others use in a lifetime.
Ctrl C/V/Z gif animation at its best.
by Voltage September 19, 2003
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