spatscolombo:

Universal constant: Kirk leans stage right in the chair when he’s being a dick. Apparently the gradient of the lean is proportionate to the level of dickishness.

I like to think that this is a tell the bridge crew starts to recognize—Kirk thinks he’s so smooth but he doesn’t realize  they can read him like he’s a Subaru due for a realignment.

“Careful today, guys; he’s practically planking across the armrests.”