A condition in which someone talks so much shit, that it's like they have diarrhea of the mouth. They also have a permanent smudge of diarrhea on their lip.
Jim: "Jake talks so much shit"
Mike: "Yeah he does, he has diarrhea lips, dude"
Jim: "Yeah, seems uncontrollable to me!"
Mike: "Yeah he does, he has diarrhea lips, dude"
Jim: "Yeah, seems uncontrollable to me!"
by Rae$ March 3, 2014
Get the Diarrhea lipsmug.