A colloquial phrase used in some regions of Latin America, predominantly Argentina, which means 'someone has forgotten something' or 'someone is confused'. It's often used to refer to someone who is forgetful or absent-minded.
Examples
- Spanish: Juan no recuerda dónde dejó sus llaves, parece que se lavó el mate.
- English: Juan can't remember where he left his keys, it seems like he washed his mate (he's being forgetful).