Sasha Alexander recently appeared on Conan. Just as O'Brien asked her about how she acts in sexually provocative scenes, she unconsciously displayed some very specific examples of such emotions before her later fictional-acting demonstration. This should come as no surprise, for even though she is a talented actress - this is NOT method acting. Like the rest of us, regardless of our professions - Sasha is first human.
The body language of a tongue in cheek has several meanings depending on the other nonverbals with which it is clustered. Here it is sexually provocative. Some of the other meanings include sadness or grief, "I gotcha" or "I just one", an alpha dominant signal or even the telling of a lie.
Intriguingly the action of tongue in cheek helps to facilitate the suppression of other facial tells - such as duping delight (which often still is displayed a moment later) and it even may help to reduce the onset of tears in the setting of grief & sadness.
Moreover tongue in cheek displays tend to used one side when it is associated with an alpha signal (e.g. sexuality or I gotcha) and the opposite side when seen with a beta signal (lying, the suppression of crying).
sincere (Duchenne) smile of joy-happiness.
In short, in these moments Sasha is feeling alpha sexual.
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Nonverbal Communication Analysis # 2352: Mila Kunis' Tongue in Cheek Graham Norton Part II
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Nonverbal Communication Analysis # 2233: Body Language, President Obama, 20 Children and the Tongue-in-Cheek
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