This phrase is not exactly a slang. It is a common saying in Spanish that means there's a lot to gain and little to lose. It is often used to encourage someone to take a risk or a chance, indicating that the potential rewards outweigh the potential losses.
Examples
- Spanish: Deberías intentar ese nuevo negocio, hay mucho que ganar y poco que perder.
- English: You should try that new business, there's a lot to gain and little to lose.