The aims of this paper are: (1) to criticize the traditional conception of understanding in sociology; (2) to show how doing interpreting is achieved within the activity the participant is currently involved in; (3) to show how an individual's special characteristics, e.g., a "strange foreigner," are constructed and used within the actual trajectory of interaction; and (4) to demonstrate how the participants in the so-called intercultural communication 'do cultural differences' within interaction.