Quello come si dice is a common spoken Italian filler, not a scripted movie line, and the clip has circulated as a standalone reaction sound on soundboards and short videos. Its appeal comes from everyday language rather than a famous scene, so creators reuse it whenever a person, character, or pet appears to be thinking hard for a word. The phrase travels well outside Italy because the hesitant delivery explains itself, making it a handy shorthand for blanking, stalling, or pretending to know something in meme edits.