v. Bullhat, Bull-style, Bulling Out.
A state of extreme personal anger wherein the only desire is to harm the object of said anger. A person in Bull Mode is extremely volatile, and will not have concern for their own or anyone else's safety. Bull Mode is rare in most humans, however nearly all people experience it at least once in life.
"When Ralph learned that the Steve had wrecked his car, he went Bull Mode on him."