An oscillation of sound that causes the bowels to loosen.  The Brown Noise is believed to be 92 cents below the lowest octave of E flat.
"We're trying to find the Brown Noise.  It's this one pitch, this certain frequency, that makes people lose bowel control!"
by Malorie September 13, 2005
Get the brown noisemug. by Riot Instigator October 26, 2010
Get the Brown Noisemug. A certian musical note that when heard makes you shit yourself. Also when in large groups the result can be severely devastating.
by Crazy Ricochet August 25, 2006
Get the brown noisemug. The sound of brown. It is a low pitch sound that makes the listeners asshole go "BLAH!!," leaving the pants of the victim heavy and very very brown.
When I was at that rap concert last night they hit the brown noise and all the niggas in the house shit demselves.
by Fat Man Jumpin April 27, 2006
Get the Brown Noisemug. by Anonymous April 27, 2006
Get the brown noisemug. A sound who'se volume/pitch makes people lose control of their bowels 
in other words shit themselves
in other words shit themselves
by Solid Dragon August 30, 2003
Get the brown noisemug. A note 92 cents belob the lowest Eb octave that makes people lose bowel controls.  From south park and awesome ass show.
by KJ October 24, 2003
Get the brown noisemug.