Is a basketball slang " catch phrase " used to describe a very creative fastbreak slam dunk during a game or in a slam dunk contest.
Jason Richardson the 2-Time Slam Dunk Champ can get nasty with his Dunkadelic Freestylin' on a fastbreak to drive the fans out of their seats. Vince Carter stole the show at the 2000 All-Star Slam Dunk Contest with his Dunkadelic Freestylin'performance.
by Derrick E. Vaughan April 3, 2005