Blue book

This emoji is often used to express intelligence, wisdom, and knowledge. It is most popular among younger generations, particularly those in high school and college. It is most commonly used on Twitter, Instagram, and other social media platforms. This emoji is not considered rude and is generally used in a positive context.

The history of this emoji dates back to the 1990s when emojis first became popular. Initially, it was used to represent books and reading, but as emojis have become more popular over the years, it has come to represent intelligence and knowledge. It is also often used to represent a student or someone who is studying.