During the scene where the pair show off their masks, they encounter a small robot child walking by trying to eat ice cream. The awkwardness of the scene and the fact that the kid's food drops afterwards gives the impression that he was probably dumbfounded.
A minor one, but when the two robots enter the town for the first time, Thomas-bot looks out his car window at someone reading the paper. Said person slowly looks up at Thomas-bot, still looking at him. Then he just continues reading.