I know the concept well
ZFG. Zero Fucks Given. I think I may have been the one who invented that concept back in the day. Back then it was known as Who Gives A Fuck. Same concept, different name.
I ran across this shorthand version when I read Stephanie Florczyk’s The Mindset Needed for Authenticity. Part of what she wrote:
An example of the ZFG mindset is wearing whatever you want…