What is ch'all?

When referring to multiple persons or people

I am going to Wawa what ch'all be wanting.
What ch'all need I got dope and weed.
Ch'all be wanting to do something later.

ch'all - meme gif

Noun - Propositional Noun --> a shortened version of "what are all of you doing" or a reference to a group of individuals .

Ch'all niggas doin? ....Ch'all be wildn...Ch'all hungry?...Ch'all bitches tryna chill?.....Ch'all be steppin to the wrong set.