The phrase combines mentira, Spanish for lie, with the surname Lacalle, strongly associated with Uruguayan politics and former president Luis Lacalle Pou. No single broadcast source is widely documented for this particular twenty-one second recording, so it circulates mainly as a detached soundboard and meme clip rather than as an official speech excerpt. Spanish-speaking users share it in political threads, edit videos and group chats as a shorthand accusation, and its meaning stays clear even when listeners have not heard the original context in which it was first recorded.