When you accidentally say "folder" instead of "directory" in a Linux group. Below there are two pictures of a hairy, bearded man (the og Hagrid from the Harry Porter movies). In the first one, he says, "Shouldn't have said that." In the second one, he says, "I should NOT have said that."
https://files.mastodon.social/media_attachments/files/116/408/887/720/401/638/original/b8bd931e8324a245.jpeg