This phrase is used to describe someone or something that is very dark or black. It's often used in a humorous or exaggerated way. The literal translation is 'blacker than a miner's louse'.
Examples
- Spanish: Después de un día entero en la playa, terminé más negro que piojo de minero.
- English: After a whole day at the beach, I ended up blacker than a miner's louse.