someone who talks shit consistently and often believes what the're saying and will go to great lengths to defend the shit. They also don't mind how what they say affects another individual.
a lowlife who gossips behind other's backs, most likely ugly as fuck, and weak as hell. the funny shit about these pussies is that you can talk shit in their faces and they wont do shit.
Any person that insists on having a conversation in a public restroom, with the person in the stall next to them.
Woman 1: Wow! That was a really quick poo. Everything ok?
Woman 2: Yeah, I just had to drop and go. There was a shit talker in the stall next to me. Made me VERY uncomfortable.
Woman 1: fuckin' shit talkers. They're so weird.