The smirk on Will Smith's face is also telling. In body language, this might be what is known as "duper's delight", where a person tells a lie/does something with some hidden intention successfully, they can't help but smirk. Actors are normally really good at being conscious of their faces, but IMO duper's delight is one of the ones actors struggle with live and under immense pressure.
His look says "omg I can't believe I'm doing this, I'm so cuh-razy lol", not "MY HONOR, AND MY WIFE'S HONOR, HAS BEEN SATISFIED, GOOD EVENING SIR!"
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