Mouthy Broad Syndrome (MBS) affects people possessing two 'x' chromosomes. Symptoms can include:
- Not shutting the fuck up.
- Telling other people your private conversations or actions.
- Flapping of the mouth with no meaningful things coming out.

Treatment of MBS is usually as simple of administering one or two sharp blows to the person affected. If this does not work seek medical attention immediately.
My wife/girlfriend has been diagnosed with MBS. The back of my hand is getting really sore.
by Tabster September 21, 2012
is an abbreviation meaning my bad styll
Joe: Bro you just drank the last beer.
Earl: MBS

Joe: ......
by Joe Snowchild July 19, 2011
Music Bullshit, referring to MTV (Music Television) as what is really is: a hot, steaming pile of bullshit.
My sister always watches MBS, ignoring the fact that it's plain bullshit.
by GWR Definition Agency July 18, 2005
Mind Blowing Sex. Do you really need a further definition? Either it is or it isn't.
The only reason I keep him around is the MBS.
by girls'nightout March 11, 2010
MBS stands for "My Bad, Sorry".
sms/msn

"Hey, why didn't you tell me SHE had a crush on me???"

"Damn I forgot; mbs."
by ann0nym0us March 25, 2008
Massive build up of sperm. Similar symptons to when a woman is experiencing PMS.
Rob hadn't had sex in soooo long he was suffering a severe case of MBS
by FredAstair July 03, 2010
An honorary degree awarded to an individual with extensive experience or tenure in their chosen field or craft. This honor is most often, but not exclusively, bestowed upon politicians or used vehicle salespersons.
John Smith, MBS
by Jim K., MBS June 04, 2013

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