Boifrous

A neologistic culmination of the words boisterous and furious.
i.e to be furiously boisterous.

(Adjective) To ascribe someone as being angry and are acting in a manner that is quite outlandish and comical.

(While observing a person in a fit of rage absolutely losing their marbles, making a fool of themselves and/or laughing hysterically while doing it)
Person 1: "What did we just witness?"
Person 2: "I'm not sure whether they're having a conniption or were feeling rather boifrous in the moment."