The brown noise was discovered by the french, and tested as a weapon during WWII. It is a a 12 - 14 Hz sound wave that, when played loud enouch, relaxes your sphincter, causing loss of bowl control.
Unlike the "Brown Note", The Brown noise is the sound that comes from a female as a penis is inserted into her anus with no warning, the sound can very from ooooo, to ahhh!, to "what the fuck are you doing!?! oww!!!" (this maneuver can also be preformed to a streaking male that has been spotted by a randyhomosexual.)
"That bitch made me watch The OC and fucking cuddle... so that night I heard the brown noise... it was swearing followed by hysteric crying."
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.