In Spanish slang, 'enfermo' is often used to refer to someone who is crazy or obsessed with something. It literally translates to 'sick' or 'ill', but in slang context, it doesn't always refer to physical sickness.
Examples
- Spanish: Este chico está enfermo por los videojuegos, se pasa todo el día jugando.
- English: This guy is crazy about video games, he spends all day playing.