What is the meaning of "Sup' y'all"?
Native speaker’s answer
Rebecca
"Sup" is a slang term for "what's up" or "how's it going". "Y'all" is a slang contraction of "you all" and is a common slang term used in the southern United States. So "sup' y'all" is a very informal way to greet a group of people or ask a group of people how they are doing. Ex: Sup' y'all? Good to see you!