Top Definition
A formal greeting that dates back to 17th century England.
What's smackin? Your mom says you smoke! Let's get to our battle stations! Do you skateboard while you smoke?
by B_Butler November 26, 2006
1 more definition
5 Words related to what's smackin?
A greeting that's sorta like what's crackin', except you also slap them.
What's smackin'? Do you skateboard while you smoke?
by BrianButler December 04, 2006

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