Top Definition
Similar to Godwin's Law, as an online discussion grows longer and more contentious, the probability of a Mean Girls reference approaches 1.

Unlike Godwin's Law, however, Fey's Law irrefutably applies to most life situations as well.
Examples of Fey's Law:

"This conversation is becoming increasingly irrelevant."

"Boo, you whore."

____

"Oh God, I have to chaperone my brother's birthday party."

"I'd rather see YOU out there shakin' that thang."
____

"I got a 96 on my test!"

"YOU GO GLEN COCO!"
by four_for_kreayshawn November 15, 2011

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