1. The act of bringing the
ruckus when someone has made you very angry.
The word "fuckyouapalooza" is usually said out
loud to the person(s) you are planning to present the
ruckus to.
2.However, in some cases, it can also be said to the people standing around as a heads up that somethings about to go down.
"Fuckyouapalooza" is mostly just a warning to said receivers of ruckus, not a specific action.