What is Og slang for?

Excuse me, could you please clarify what "Og slang" refers to in this context? I'm not familiar with this particular terminology, and I'm curious to understand its meaning. Is it a slang term used within a specific community or industry? If so, could you elaborate on where and how it's typically used? I'm eager to learn more about this and how it relates to the broader world of cryptocurrency and finance.