Top Definition
Excessive cheering/excitement at any jam band concert/festival. It usually occurs before the show, when the band comes on, whenever the band does something cool in a song, after each set, before the encore, and after the concert. You'll know it when the crowd slowly starts getting louder and louder and especially when the house lights go off.
Spunion #1: Man, Trey was on fire tonight! I started woooing so hard after he nailed the YEM intro...WOOOOO!!!!!!

Spunion #2: Yeah brah, heady wooo!!!

(crowd): WOOOOOOO!!!!!!!!!!!
by woooooo!!!!! February 07, 2010

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