Arthur's reply is as blithe as they come. "It's yoga, not a circus act." Clearly this has been an issue before. It may be noted also that he's paying more attention to the instruction sheets than to whatever Eames is doing over there, noise included. When over there becomes over here, however, he settles back on his heels and looks up at the looming form of his one and only teammate. (Theirs is a modest team, but a mighty one nonetheless.)

Before said teammate can make any further comment, Arthur points at him with the screwdriver. "Not a word. If the instructions were in English, this would be done by now. Why...did you bring home a shitload of space fruit." Note how one sentence blends so gracefully into the next. You could dance to this conversational rhythm, really.