Nobody. Idioms and slang evolve naturally as people talk.
Idioms are a type of figurative language that can be used to add dynamism and character to otherwise stale writing. You can also use idioms to: Express Complex Ideas in a Simple Way. Oftentimes, idioms can help express a large or abstract idea in a way that is succinct and easy to understand.
Ideas cannot be protected by copyright: only the expression of the ideas.
Robbert E. Duggy
Ideas you came up with.
Idioms are created over time by native speakers of a language. They develop organically as a way to express ideas or emotions in a concise and culturally relevant manner. There is no single individual or group responsible for creating all idioms in a language.
John came up with the most ridiculous idea ever. John came up with stupid ideas. John came up the stairs. John said came up so much that his head hurt. :/
She dead but she came up with her ideas in her sleep! All authors get story ideas from the same place - see the link.
There are no precise words. Idioms are just phrases that catch on.
Entertianment is came up with unique and best ideas for birthday parties for kids.
Alfred Wallace
From idioms, you can learn cultural and historical context, as idioms often reflect the values, customs, and experiences of a particular group or society. They can also provide insight into the linguistic and semantic nuances of a language, as idioms often have figurative or metaphorical meanings that may not be immediately apparent. Additionally, idioms can be a fun and creative way to express ideas and add color to your language usage.
He came up with everything because he directed the movie and wrote the story.