The poem is only four short lines, but it carries a sharp, uncomfortable feeling. The speaker is in a conversation about abuse, and instead of staying outside it, suddenly sees themselves in it. The title, "Self-conscious," fits: the speaker becomes painfully aware of their own body and how it might be seen, used, or judged.
The strangest line is "served by every body." The pun on "everybody" and "every body" turns people into bodies, and "served" suggests food on a plate, or perhaps something handed over to others. Then the final image, "the only oven," is open to reading. It might be the speaker's own body as a place where things are cooked, or a feeling of being trapped and heated up by shame. Judging by the imagery, the speaker seems to feel exposed and confined at once.
The mood is tense, clipped, and unsettling. The poem doesn't explain itself, and that silence makes the discomfort stronger.