Definition

Acronym for 'All Fucking Kinds of Crazy'—used to describe someone whose behavior is so chaotically unhinged across multiple categories that you can't even categorize their insanity. It's chaos in its purest form.

Example Usage

After she got arrested, punched someone, AND left with a stranger, we all agreed she was totally AFKC last night.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=afkc&defid=12216674)