I swear, I only do these to try and interpret them as broadly as possible.
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Entwined Fingers I think happens early on before Smoker knows how strong Hunter is, otherwise she'd never challenge her to arm-wrestling. Same with Carrying on Back I guess (of course she can pick you up, Smoker, what a terrible bet. But at least you only lost a soda).
I haven't inked/colored anything this way in ages. I always forget how long it takes, haha.
Hunter and Smoker (c) Left 4 Dead, although these two preinfected ladies are mine I guess