Shaq Unloads F-Bomb Live On 'NBA On TNT,' 'We're Getting Fired Anyway, Ernie!'

Shaquille O'Neal had a bit of potty mouth while live on "NBA on TNT" on Thursday night -- but he wasn't apologizing for it ... in fact, he defended it in hilarious fashion!! The funny scene all unfolded as the Lakers legend, Ernie Johnson, Kenny…