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.
Also See David Style
Boy 2: Really? He's such a david style!
Boy 1: Yeah, he tried to tear by eyes out but I'm too fast for his david styleness!