This sound is the signature dramatic sting associated with Law & Order: Special Victims Unit, the long-running television crime drama scored by Mike Post. The cue became widely recognized beyond the show through meme edits, reaction videos and short-form clips that treat minor mishaps like major investigations. Its staying power comes from how fast it sets a legal-drama mood in just a couple of beats. Online, people use it as shorthand for “caught in the act” or “this just got serious.”