The terror of a king is like the growling of a lion;Solomon knew exactly what he meant when he spoke this proverb; and keeping in mind that these are proverbs, not promises, we could just move on from right here and say that this verse does not apply to us. I am fairly sure that none of us will stand before an earthly king; and if we somehow find ourselves standing before a king (or President) then I doubt that we will provoke him to anger. (Although I am sure that given the chance we would like to say a thing or two to the President.)
He who provokes him to anger forfeits his own life.
In all seriousness now, we are all to be submissive to those in authority over us. I think today's verse can be applied to that. I know that whether in job situations or here at home, when I have disagreed with one in authority over me, it is my job first to obey. And if I really felt like I needed to discuss my opinion with that person, then tactfully and humbly sure did get me farther than angrily with a finger pointing in the face.
Please flip over and read Romans 13:1-7 before closing your Bible today. This passage is such a good reminder about our authorities and why we need to pray for them.