Ctrl + Z

''Mobile users be warned! You cannot perform a proper Ctrl + Z with your digital keyboard, so stop trying.''

Pressing the Ctrl (control) and Z keys at the same time will undo text you recently typed, bring back text you highlighted and then deleted using Delete or Backspace, and, in Google Chrome, will send you back a page if you aren't editing text or doing something else that would make Ctrl + Z do something else. In Windows' Notepad, doing it twice will undo the undo you just did. ''Holding it down will rapidly undo and undo the undo and undo that and so on... how fun...''

In UnTrash form (also known as the worst form), Ctrl + Z refers to when something is done then almost immediately or abruptly undone, like have someone's birth be undid by having them blip out of existence.