A phrase used when you come back to school on monday, or when it's friday and people are about to be attending a party. Phrase comes from song "Swing Dat Shit" -- Ace Boogie. You "Swing dat" while you are saying it
Hanna: Yo you going to Jennifers Party on Saturday?

Ariel: Yeah you already! I'm gonna up in there like what what.
by hyb byrd catcher January 5, 2008
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