The mimimi gag comes from internet slang rather than a film or show. In Italian online culture, 'mimimi' is the onomatopoeia for petulant whining, the equivalent of the English 'wah wah wah' trombone of complaint. The vocal version, someone chanting 'mi-mi-mi' in a mocking baby voice, spread as a user-generated soundboard clip and a WhatsApp voice-note reply, used to tease complainers without saying a word. Short, wordless and instantly recognisable, it survived as a reaction sound because it fits any argument, rant or excuse.