an imaginary medical problem that is supposed to account for someone talking too much
Man, that guy has a serious case of diarrhea of the mouth. God he is annoying.
by Light Joker January 14, 2005
1. A term used to describe a person who cannot or will not stop talking, no matter how boring or pointless their topic of conversation is
2. A person who describes to you the antics of their cat, Snowball, until your eyes glaze over
My boss has diarrhea of the mouth; our last conversation involved donkeys, bananas and his obsession with trains.
by Lois the Lane November 02, 2009
1. a condition where some obnoxious bozos are always throwing their weight around and belittling all those who don't agree with them. Such people think they "know it all" about everything when they really know zero because everything they say is a load of crap.

2. a similar condition where someone cusses way too much because he/she thinks it's "cool" but it really makes said person look like a stupid juvenile fool.
1. today in this age we are swamped by a lot of people who have diarrhea of the mouth.

For example, certain politicians wasted time and money holding sessions geared strictly to determine if an opposing party should be labeled as "socialist". They don't even know what socialism is, and there's too many problems that require remedial action NOW. These dunderheads got a case of petty stupidity. There's no time for it now.

2. On an ICP album and one by Limp Bizkit there are songs that actually tell you how many times they use the word "fuck". It's over 80 times each! Now that's a case of major diarrhea of the mouth.

3. Lee is watching TV and an ad for some airline is on. The host just keeps on blabbing on and on. He's offering reduced air travel rates only IF Lee schedules his flight on certain times of day, on certain days of the week, using a certain credit card, showing proof of ownership of a new Subaru car and he must've kissed Marilyn Monroe. So many conditions! Lee thinks that the ad host has diarrhea of the mouth - all he's saying is total SHIT.

4. Kid Rock should be renamed Kid Ego. He's got absolute diarrhea of the mouth.
by Starpunk May 23, 2009
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
When you can not stop talking for nothing. When you just go on and on and on.
Mom caught me sneaking in last night. I started lying to her and I just had diarrhea of the mouth.

That lady had diarrhea of the mouth. She would just not shut up.
by Boobralicious July 20, 2009
when you use a bunch of curse words, similar to Tourette's syndrome or when you spread a lot of gossip.
Guy: I can't believe you went out with that asshole. He is such a player!

Girl: At least I don't have diarrhea of the mouth!
by Jaeda June 15, 2008
a. where someone who is full of shit, usually a homeschooled student, who has no social skills says stupid crap that makes you want to slap that person and ask them why they are so dumb. Cured by shutting the hell up.

b. a lapse of the brain, resulting in duh de duh. Otherwise referred to as a JT moment.
God, Kevin has diarrhea of the mouth. He just opens his face and stupid crap just sprays everywhere.
by Scottie does know December 14, 2005

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