Why Do We Use ‘Slang’ and How Does It Change Over Time?

Slang is like a secret code that friends use to understand each other better. When new words or phrases come up, they become part of the group’s special way of speaking, and over time, those words change with the people who use them. It’s like when you and your best friend make up silly nicknames for everyone in class, then one day, all of your friends start using that nickname too!