Get soy sauce
From China Digital Space
打酱油 (dǎ jiàngyóu): getting soy sauce
This means “no comment” or “none of my business.” It is a humorous way for netizens to distance themselves from a sensitive or political topic.
The word came into popular usage after Guangzhou Television interviewed a local resident about the Edison Chen photo scandal. The man answered, “What the f**k does it have to do with me? I was just out buying soy sauce.”