What are slang words from the early 1900s?

In the early 1900s, slang Words included "bee's knees," meaning something Excellent or outstanding, and "cat's pajamas," which referred to a person or thing that was the best or fashionable. Another term, "flapper," described a fashionable young woman known for her lively style and independence. Additionally, "g-man" referred to government agents, particularly those involved in law enforcement during Prohibition. These terms reflect the cultural shifts and social changes of the era.