The Vietnamese phrase "rát ruột" literally translates to "burning intestines" in English, but it is used to describe a feeling of deep emotional pain or distress, often related to financial issues or the stress of spending too much money. You can think of it as being in agony or feeling a strong sense of regret or worry.
"Rát ruột" is a vivid expression that captures the feeling of distress, particularly in a financial context.