Top Definition
Expression used to describe the sudden onset of migraines or other unforeseen, unexplained, illnesses that occur at work when the weather outside is sunny and above 70 degrees Fahrenheit. The expression is believed to have first and most commonly been used by a software testing manager by the name of Duri sometime in the first decade of the 21st century.
It's 85 degrees and sunny... Gyaaaaaahhhh, I'm going to get out out of here and go home early
by Volt2000 June 01, 2007
5 Words related to Gyaaaaaahhhh

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