Not what it means. It's an expression of agreement

it is a new jersy way of agreeing with another person

fuckin' assured. if you've seen the deer hunter you'll know what i mean.

An expression to show excitefulness when something completely awesome happens in your life by clinching your fist and pulling your arm in like your flexing your muscle.

General displeasure of and event and also can be used to show that someone likes something immensely.

Northern talk for "Fuckin awesome!" or "What the hell?!"
Can either be positive or negative.

Fucking A means "Fucking Awesome"
A simply stands for Awesome