This clip comes from the Brazilian WhatsApp audio culture where funny voice notes get forwarded from group to group until the original sender is unknown. VTNC is a common Portuguese profanity abbreviation, and adding geral turns it into a blanket insult aimed at everybody. The description of the speaker as a mulequinho full pistola, slang for a little kid who is completely furious, helped it spread as a reaction. It remains popular because the angry delivery is instantly recognisable even without context.