The Darth Vader breathing effect comes from the Star Wars films and became one of the character's most recognizable audio signatures. Over time, it spread far beyond movie fandom into meme edits, parody videos and short-form clips. People use it as a shorthand for menace, intimidation or over-the-top seriousness, much like the Inception Button is used to signal huge dramatic stakes. Its staying power comes from how instantly recognizable it is, even in a very short clip.