You eyes could see bad things and won't stop for it. For instance, seeing pornography, seeing those who in needs but we sometimes refuse to recognize it.
Your hand is, i think, the hardest to tame physically. When you failed to tame them, hands that support you do generous things could hurt those you love physically, most of the time. Same things for your feet.
Your ears, who can stand against gossip, rumor. Everybody, I have to say, love gossip! Those ears could reject the fact, could slip the truth when information come to an ear, and gone out from another.
Your mouth, could be the wildest, the hardest to tame. They could ultimately destroy one's mood. In extreme case, they could kill, not literally though, but they have capability to do so. They could do bad things out of nowhere, spontaneously. They are the most danger of all.
That's it for now. Christmas is coming! I can't believe it's almost Christmas again.