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1.
A silent fart that you hope will go un-noticed in a crowd or a family situation, that does the exact opposite due to its horrific smell. The Raunch Fart is usually identified by the heat or burning sensation that accompanies its escape.
Dick: "God, someone just blew a total Ozark Mountain class Raunch Fart in there!"

Jane: "Yeah, it was me."
by chuck nitron February 24, 2009