The slang term "eating big noodles" means eating noodles.

Slang refers to informal and colloquial sentences among the people. They are easy-to-understand and smooth words with local color that people summarize in their daily lives. Strongly regional and more life-oriented. Slang is a type of informal language that is usually used in informal situations. Sometimes slang is used to express new things, or to give new words to old things.