K has made this same assertion multiple times since coming to Duplicity, with mixed results; he doesn't think a single person has understood what it means to him, not really, but he's not surprised. It means that he's watching carefully and he considers, very seriously, his friend's face when he hears that sentence now.

He wipes his other palm down his thigh, drying sweat and some residual thought to rid it of lingering smoke, and holds it out for Jesus's, silently asking permission.