Proverbs 13:2-3 (NKJV)
A man shall eat well by the fruit of his mouth, But the soul of the unfaithful feeds on violence.
He who guards his mouth preserves his life, But he who opens wide his lips shall have destruction.
Many times I have said something and then later remembered what I said and I just cringe in anguish at the thought of having done that and wished I could have taken those words back. Someone was explaining this principle to a group of children once and used a toothpaste tube as an object lesson. He told the children to squeeze some toothpaste out on to their hand and after they had done so he asked them to put it back in. Well you get the point, it can't be done and if you try it just makes matters worse. On radio call in shows they have like a fifteen second delayed broadcast so that if someone says something inappropriate, they can bleep it out. I could use something like that. Of course the thing to do is to think carefully before you say something. That's just good advice even if you are not inclined to say something inappropriate.