Brown Sound

Like "White Noise", Brown Sound is a level of noise humans can only hear when someone is talking absolute Bull Shit.

It could be literally described as defecating orally.
Nathan: "Dude, I totally got laid last night."
Alomgir: "Shut the fuck up!"
Liam: "Don't worry about it. He's just talking Brown Sound."
by FlabberJabber August 24, 2008
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