U.S. Rep. Anthony Weiner, R-NY, speaks during a town hall meeting at the Howard Beach Senior Center Monday, Aug. 10, 2009 in the Queens borough of New York. Weiner addressed concerns on how seniors will be affected under President Obama's health care reform. (N.Y. Post: Chad Rachman)
When we feel anxiety or anger, one of the displays that we all make to repress this anxiety is to press our lips together. You can see in Anthony Weiner's picture here that his lips have completely disappeared. They have rolled into his mouth and are pressed with great tension.
Notice also that he is trying very hard to mask his discomfort by smiling (you can see a subtle amusement smile), but the lips don't lie. He is uncomfortable, possibly angry, and certainly not in a very good state of mind.
Watch for this display, you will see it very often.