To have (or anticipate) a good time; to participate in a wild and exciting event
also used as a form of acceptance: i.e. person #1: do you want a beer?
person #2: yah guy, whoop it up.
also used as a form of acceptance: i.e. person #1: do you want a beer?
person #2: yah guy, whoop it up.
by swail May 28, 2004