Jimmy Kimmel is hosting the Emmys again tonight - and his opening Monologue is included above. He spent a significant chunk of time singling-out the cast (and the real people) of The People v. O. J. Simpson: American Crime Story.
During the 1:05 segment of the video (captured below) we can see two particularly noteworthy nonverbal signals.
Both Marcia Clark (left) and Sarah Paulson (who plays Ms. Clark and who invited her to the Emmys) are laughing sincerely. In addition to rotating her head toward Ms. Paulson, Ms. Clark also tilts her head in the same direction. This tilting of the head during laughter is a sincerity amplifier as well as a rapport multiplier. Whenever we share sincere laughter with another person - there's not only humor and joy-happiness transpiring - but just as valuable (yet very under-appreciated) the laughter additionally facilitates emotional bonding (however it MUST be sincere laughter). Simultaneous head-tilting toward the other person further strengthens this laughter connection.
Looking carefully at Ms. Paulson we can see she's jutting her tongue out between her teeth in the midst of her sincere laughter. This is one variety of a "Tongue Jut" (more specifically, it's a "Loose Forward Tongue Jut"). This nonverbal behavior is an indication of the emotion of "I've been caught" and embarrassment (e.g., by Kimmel and by the camera). In addition, a component of what's being felt and expressed in this moment is self-deprecating in nature.
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