The exact origin of this recording is unclear, which is common for short Spanish-language voice clips that circulate as reaction audios across messaging apps and social platforms. 'Eso es mentira' works because the phrase is universally understood by Spanish speakers and instantly readable even for non-speakers through context and tone. It spread through meme pages and short-form video, where creators needed a quick verbal stamp to dismiss a claim. Its staying power comes from versatility: any exposed lie, from gossip to clickbait, gets funnier with a blunt voice calling it out.