Having the balls to sag more than most people with and having a gait that complement the walk and the talk. It's similar to up tight like an asshole but also the complete opposite while promoting an aura of freedom. Also can be spelled sagasscity and is pronounced sag-ass-sit-E

The closest antonym is conservative if you mix it with wedgy. But sagacity also hints at bravery and having the balls and/or guts to be yourself and stand out.

How saggy one's tits are.
This can be judged on a scale of 1 to 10.