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8.
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 January 11, 2006
 
9.
A sound who'se volume/pitch makes people lose control of their bowels

in other words shit themselves
YUCK it stinks in here ever since the Brown Noise happened!
by Solid Dragon August 30, 2003
 
10.
A note 92 cents belob the lowest Eb octave that makes people lose bowel controls. From south park and awesome ass show.
Hey guys i found it, i foundt he brown noise
by KJ October 24, 2003