Top Definition
A ninety day period. Or three months.

Derived from the phrase: "Ninety days is all it takes to change everything about your life." From the book, "The Alabaster Girl" by Zan Perrion, and widely used in his lectures and talks.
How long will you be backpacking in Europe?

Oh, I expect about a perrion or so...
by AlisonPlunderland February 04, 2013
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