Stands for 'panic attack.' A physical response to shocking news in which you cannot breathe, your mind becomes a blur, and you feel the overwhelming urge to freak out. Most would characterize this episode as a 'freakout' or a 'bitch fit.'
"Oh my god, that creepy stalker from my chem lab ate breakfast with me this morning, and I almost had a PA."
PA by sweethearts May 7, 2008
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