This Mexican slang phrase translates literally to 'check the water of the sweet potatoes'. It is used to suggest that someone should 'test the waters' or 'probe the situation' before making a decision.
Examples
- Spanish: Antes de invertir todo tu dinero en ese negocio, deberías tanteale el agua a los camotes.
- English: Before investing all your money in that business, you should test the waters.