Mel GibsonAs we hear more and more expletive-laden crazy-pants rants from Mel Gibson we have to wonder whether Mel has lost that little voice inside his head that tells him he has crossed a line, or whether he ever had that little voice in the first place.

Maybe the answer is that he just can't help himself.

Experts tell us that Mel's continued verbal diarrhea is pathological and deeply ceded in psychological issues.

"Mel is driven by his sexual frustration, fear of abandonment, and disillusionment at the realization that Oksana doesn't love him, but is merely a gold-digger," explains psychiatrist Dr. Carole Lieberman, M.D.