This work aims at presenting the need to observe the edification of the hegemonic discourse through the focus on issues related to gender and ethnocentrism coming from what goes unnoticed for its mundane ordinariness. A carpentry course for women – in which a male teacher interacts with ten female pupils – constitutes the object of this investigation. Under a nonessentialist qualitative interpretativist standpoint, the interactions at stake will be generated from an ethnographic perspective of research and analyzed in the light of the Interactional Sociolinguistic and Narrative Analysis. As to provide openness to problematization of latent issues, the queer theory represents an essential construct to a critical view on the concerned subject. The understanding of performance and performativity, the comprehension of what builds the ethnocentric perspective and unequivocal truths which are imposed by the dominant discourse, as well as the concept of ethnographic authority constitute the touchstone for the present research. From such critical perspectives and taking into account the relationship teacher/pupils, we will observe the maintenance of hierarchies of gender and the ethnocentric standpoint, above all as it happens in narrative accounts of the interacting participants. Therefore, the performance of the parties involved will be analyzed through the investigation of the way they align in the framing sequences of the carpentry lesson in question; by observing the discursive strategies adopted by the teacher while building his performance and keeping the floor; and also by the way the pupils support his speech, taking into consideration the importance of the situated discourse. Finally, we will analyze the metareflexive interaction between the researcher and one of the course participants a year later in the context of open interview.