In a speech on Wednesday, Barack Obama retracted an earlier joke which he made at the future Senate Majority Leader's expense (at a White House Correspondents Dinner) saying, "... You know actually, ah, I would enjoy having some Kentucky Bourbon, ah, with Mitch McConnell, ah <lip bite>, I don't what his preferred drink is, but ah ..."
Biting the lip (much more commonly seen with the lower lip and on one side as the President exemplifies here) is a body language signal which can have a number of meanings depending on the other nonverbals with which it is clustered. In this context the President's is biting his lip in order to partially suppress a smile.
What are the other body language scenarios where lip biting is seen?
See also:
Nonverbal Communication Analysis No. 3004: Sophia Loren Recounts Her Famous Sideways Glance Photo with Jayne Mansfield's Photo - But Does Her Explanation Match Her Body Language? Hmmmm
Nonverbal Communication Analysis No. 2508: Surfer Kelia Moniz and a Classic Flirtatious Body Language Display
Nonverbal Communication Analysis No. 2955: Adrian Peterson - a Telling Body Language Cluster
Nonverbal Communication Analysis No. 2379: Bill Clinton's Speech at the George W. Bush Presidential Library Opening - Body Language of Former and Current President
Nonverbal Communication Analysis No. 2634: "Lone Survivor" Navy SEAL Marcus Luttrell, "60 Minutes" Interview
Negotiation Body Language Secret # 411: Lip Biting with Intense Physical Activity
Nonverbal Communication Analysis No. 3002: How NOT to sit in the Oval Office - Mitch McConnell ... your Beta is Showing
Nonverbal Communication Analysis No. 2254: John Boehner's Speech Today - One Major Body Language Improvement The U.S. Speaker of the House Should Make