Vim prank

I noticed that there are quite few posts on the Internet about ggdGZZ (or ggdG:wq!, which is effectively the same). As a second-time Vim newcomer, I feel obliged to make a post about it. Command explanation:

• ggdG clears current buffer:
  • gg — go to first line
  • d — delete to...
  • G — last line
• :wq! or ZZ saves current buffer and closes it, leaving no way to undo.

So next time your nerdy friend leaves Vim open and looks away for a few seconds — rush to it, smash in ggdGZZ and run away!
Pro Tip: don't use <Caps Lock> button to start writing capital letters — some nerds like to remap it to something else.

Super-pro tip: if you're Pro Vim user having Vim newbie nearby, use ggg?G on him, optionally followed by ZZ. It's much less destructible — same command returns text back to readable form.