Some people just like to make sure their first words are also their last.
To be fair to A.J., he had no reason to believe his mic was on. Yes, the newscast had started, but based on the quality of the intro, no one in that studio should assume any of their electronics equipment is going to be in working order. Unfortunately for A.J., he's his own worst critic.
Clemente also made clear on Twitter that the first word you heard him utter was not "gay."
Seems like "fuckin' shit" is a weird way to pronounce that one, but maybe if you say it really fast.
Update: It would appear the extremely predictable has come to pass. A.J. Clemente has been fired: