The phrase itself is playful Spanish slang, turning a complaint about lies into an exaggerated catchphrase built for repeating. Clips of people overreacting to being lied to travel well in Spanish-speaking meme spaces, and this short version works as a standalone reaction on soundboards and in chats. Its appeal is the spelling and delivery of mentidaz, which makes the accusation sound silly rather than serious. Shared as a quick audio reply, it has stayed useful for jokes about excuses, gossip and everyday fibs between friends online.