Regedit is the built-in Windows command for opening the Registry Editor, the tool used to view and change low level system settings. Online, the name alone became shorthand for risky PC tweaks, modding tutorials and fake hacking setups. Short clips using the word spread on soundboards and in gaming edits because viewers instantly recognise the reference even without context. It stays popular as a quick punchline for errors, crashes and overconfident computer fixes.