The article presents an application of Elizabeth Grosz’s corporeal feminism to the interpretation of Język korzyści by Kira Pietrek. The emphasis is put on how the subjectivity and fleshliness of poetic characters are constructed. The key issues of the feminist identity discourse focus on redefining the categories of subject and flesh as well as going beyond the mind-body and subject-object oppositions. Pietrek uses and, at the same time, exposes and ridicules schemes and clichés to reconstruct patriarchal reality. Research problems concern insufficient characterization of the subject’s “materiality”, which is connected with the adoption of solutions that go beyond Grosz’s theoretical considerations.