The psst is a universal human signal rather than a line from a specific film or show, made by forcing air through the teeth to call someone over quietly. Short versions of the whisper have circulated on soundboards and in video edits for years because the meaning is understood instantly without any words or context. It remains popular in memes, gaming clips, and short form videos where creators need a discreet attention cue that works muted, in any language, and in almost any secretive or sneaky situation.