Can't get blood from a turnip

Meaning

This means it is impossible to extract something from someone or something that does not possess it. It is usually used when someone is trying to get money or resources out of someone who is broke.

Pragmatic, dry

Used in a sentence

• I know you want me to pay you back, but I am broke until Friday. You can't get blood from a turnip.
• The manager is asking for higher sales numbers, but the customers just aren't coming in. You can't get blood from a turnip.
• Stop bugging your brother for cash. He is a college student, you can't get blood from a turnip.