One who's inner voice is on blast. When they think it, you hear it. Often affects toothless tweekers and alcoholics who are jonesing hard. They know they are ruining your buzz, but will continue to run their mouth even while you are beating them and afterward. The best solution is to give them some and find them a ride to anywhere farther than they can walk.
Will someone please give this speakerbrain bitch a hit so she will shut the fuck up?