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its like burping but instead of a loud its silent and gaseous...usually accompanied by the smell of your last meal. A bad urfff can be directed towards someone so that they may smell it. Never urfff in a car with closed windows. Pretty much like farting through your mouth. Urfffs are better sociably because no one knows you did it.
I had a hot dog with soda and it made me urfff. I can taste it and smell it in my mouth.
by boricuadon December 24, 2010