Someone who can't stop talking.
Joe Shmoe: Billy must have diarrhea of the mouth.
Bob: What do you mean?
Joe Shmoe: He won't shut up!
Bob: Ohhh.
by Bagdaddy May 29, 2006
14 more definitions
Top Definition
A person, who usually isn't very intelligent, who will not shut up. It's typically a cover for their own inferiority.
Damn, shut the hell up dude. You sound like Dabo Swinney with all that diarrhea of the mouth!
by C-dog73 June 15, 2012
When someone won't STFU and keeps blabbering their inane chatter.
See RuffBuff.
by All of RedOut.org September 25, 2003
Talking too much, usually about something unimportant.
Susie has diarrhea of the mouth.
by Shawn B. April 14, 2003
When someone won't STFU, and he doesn't realize that everyone stopped listening a long time ago.
Aerofan thinks he sounds intelligent by padding his speech with a ton of words. But we know the truth. He's only compensating for his small penis. He has diarrhea of the mouth. SHUT UP!
by justahandle2007 January 17, 2007
when one needs to take a shit but it comes out from the wrong end.
I got mouth-diarrhea all over my pants
by bastardized bottomburp March 22, 2003
constant talk with no information value. unstoppable talking. saying alot but saying nothing at all, not to be confused with saying alot by saying nothing at all. meaningless and unstoppable talk. drug-induced chatter. politics. barf.
That girl has a serious case of diarrhea of the mouth
by Tomsoma March 22, 2003
Spilling your beans nonstop to any and everyone who will listen. This especially applies when you're cracked out or tweaked on drugs and feel the need to share every random thought that crosses your mind.

See also chatty cathy.
"Dude, you totally have diarrhea of the mouth. You need to shut up for a bit."
by ariesjow July 28, 2005

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