The Ctrl+Z Resurrection

That heart-stopping moment when you deliberately delete some code instead of copying it (because who needs backups, right?)... only to suddenly realize you actually needed that code. Then—like a digital necromancer—you hit Ctrl+Z and your supposedly dead code resurrects itself. The emotional reunion that follows is worthy of a Hollywood tearjerker. Your cursor hovers there, trembling with gratitude that undo buffers exist. Without Ctrl+Z, half of all code would permanently vanish into the void during refactoring sessions.