Yall; Y'all; all y'all

Definition:
Short for "you all", meaning "you" in the plural sense.
Actually, is a contraction for the words you all.

Usage:
I'm tired, when are y'all gonna get the hell out of here?
Have all y'all been to Six Flags over Georgia?

Explanation:
Typical lazy speaking, and the fact that using the true plural for "you" (which happens to be "you") just sounds strange.
Y'all is always plural; however, when referring to a large group we say "all y'all".

Trivia:
If you have a fun fact associated with this word/phrase include it here.

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