This sound belongs to a widely shared family of short monster attack effects used across games, anime edits and meme videos where a tentacle, vine or alien limb needs a clear audio cue. With no confirmed original source attached to this version, its popularity comes from its flexibility rather than a single scene. Creators reuse the same wet whoosh and slap for boss fights, horror reveals and comic overreactions, because the listener instantly understands something large and flexible has struck, even when the creature stays off screen for most of the clip.