Top Definition
An expression of joy, happiness and tranquility.Pronounced nintey nine nine it's used by Toyota Prius owners when their MPG indicators max out at 99.9 miles per gallon.
How are you doing today? I just got promoted and my asshole manager got fired so I'm 99/9.
by vivian darkbloom May 09, 2007
5 Words related to 99/9

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