Astaganaga is widely used online as a reaction sound in short-form videos, especially on TikTok and reposted meme edits. The phrase itself is recognized in everyday speech as an exclamation of shock or dismay, which makes the audio easy to understand even in very short clips. Its staying power comes from that instant emotional cue: creators can drop it over fails, odd behavior, or chaotic reveals and get a clear comedic beat without needing extra context.