It's used in times of anger to really piss someone off to the point of the fuckining where death and destruction crosses your mind you feel a little murdery
The Quantum Fuckining is when an individual feels (like they should give a fuck, might have a fuck to give, or fuck it all. Thus the fuck has been quantified; therefore existing and not existing all at once.)
A large group of people may experience a mass desensitized by a sudden and seemingly endless set backs such as but not limited to, pandemics, power hungry leadership, and disaster after disaster. May collectively experience (The Quantum Fuckining) together.
The quantum Fuckining of 2020 when a world wide pandemic revealed the strength and weaknesses of the world leaders and childishness of adults everywhere over wearing face panties.
A catch phrase popularized by the video "My New Haircut." Said when someone is on a roll or in a state of extreme focus and does not wish to be interrupted by someone that he/she deems unimportant and irrelevant.
From "My New Haircut":
Guy at desk: "Sir, you have to sign in."
Guido: "Not now chief, I'm in the fucking zone."
Kindergarten Teacher: "Who wants to read the next couple pages of 'The Cat in the Hat?'. Let's see...Jimmy, how about you?"
Jimmy: "Not now chief, I'm in the fucking zone."