To smack, woup or otherwise use hand to buttucks contact while dancing, listlening to or playing country, bluegrass, hilljack music.
The Bluegrass band had the people on there feet bootie wackin to the music.
by JB Mike January 5, 2011
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knocking on peoples cars when theyre either making out or in the back seat
My friend and I were out bush wackin when we knocked on a KKK member's car. Him and about 3 other KKK guys jumped out and chased us through the woods.
by pink pony October 28, 2003
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