A Prank
SurgicalStr1ke shares a harmless prank to help a colleague understand why it's a bad idea to leave their computer screen unlocked: "[S]creenshot of the desktop, set as wallpaper, hide icons. I did this in college in 2003 and it still gives me a small chuckle now." And greenwood93 suggests, "Fake windows updates are fun, a user who left their laptop open got to something like 600% one day; don't