Verb: to talk profusely about meaningless or false information. Information believed to be pertinent or true by the speaker. This is usually associated with rapid, off target tangents referring to the speakers past, usually involving repeated allusions to time spent at a penitentiary, farm, or personal security business. It can also be loosely used to define a response to a question that in no way answers the question.
Noun to describe a person who is absolutely bunkering insane mad crazy nuts.
Did you see Steve jump through that 57th floor window, do a back flip and land on a uni cycle and ride off into the sunset? He's bonkering mad that man.