The phrase comes from everyday Mexican Spanish, where 'neta' is slang for 'really' or 'for real' and the full line is a playful way of asking someone to swear that something is true. Short voice clips like this one circulate widely on meme soundboards and in short-form video edits, where Spanish-speaking creators reuse them as instant reaction sounds. Because the line is short, expressive and easy to recognise even without subtitles, it works well across pranks, gossip stories and surprise reveals, keeping it in regular use long after its first uploads.