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the term "to go all hayley" is a popular colloquialism in the south wales town of Maesteg. It is used to define a moment of super violent irrational maddness often occuring for no apparent reason obviously named after the woman in question.
Dude: man my girl went all Hayley again today
Other Dude: You should drop her silly ass

Man to girl: don't go all Hayley on me now woman!
by Sausagio_Bacon April 21, 2008
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