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A combination of "what do you/what are you/what have you" or "whatcha" with "Y'all" to form a compound word used to ask what a group of people think, want, or do.
What'chall want from the store?
What'chall think of this?

What'chall doing?
What'chall gonna do?
by Need Some Coochie No cap October 15, 2018
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