Well, the bible does say that the serpent was more crafty than any other beast of the field that the Lord God had made. And he did convince Eve to take a bite of the apple.
Sooooooooooooo . . . who would trust him not to bite when you stick his head in your mouth?
I think in this case Mark Twain said it best:
"It is better to keep you mouth closed and let people think you are a fool than to open it and remove all doubt."