He just says shit... He doesn't need to believe it and I don't think he is even aware of what he says. He has handlers that remind his of what to say... But that is it.
So... More proof he has the mentality of a 6 year old. Watch his next round of excuses for whatever bonehead thing he does next. Then think, "He is 6 years old!"
Think about him as a 6 year old getting busted breaking a window with a golf ball and the unbelievable story he might tell his father.
He just never grew out of lying!