* Slang is constantly evolving: New slang terms appear and old ones fade away.
* Slang varies by region, age, and social group: What's considered slang in one place might not be in another, and what's cool among teenagers might be outdated for adults.
* Slang exists in many languages: This makes collecting global data extremely difficult.
* Defining "slang" is subjective: Some words considered slang by some people might be considered standard vocabulary by others.
However, it's safe to say that slang is extremely widespread:
* It's used by people of all ages and backgrounds.
* It's part of everyday communication in many cultures.
* It's often used in informal settings, like conversations with friends and family.
Instead of focusing on a specific number, it's more helpful to consider the role of slang in communication:
* It can foster a sense of belonging and identity within a group.
* It can be used to express emotions and ideas in a more informal way.
* It can reflect cultural trends and societal changes.
So, while we don't know the exact number of slang users, its prevalence and impact on communication are undeniable.