Taking a languaging perspective, this paper considers how kindergarten students and their teacher are relationally and intellectually responsive to one another in authoring conversations by constructing a sense of copresence. Copresence is defined by Goffman (1966) as being "uniquely accessible, available, and subject to one another" (p. 22). In this paper, I make Goffman's construct visible by showing how students and their teacher discursively align with each other. Microethnographic discourse analyses of sharing time events in writing workshop reveal that copresence is performed as playfulness, empathy, and disagreement. Implications include using the construct of copresence to assess the relation between the performance of authoring and the social life of the classroom as well as drawing upon the dialogic, improvisational nature of copresence as a point of pedagogical leverage.