My brain interprets certain female faces as "me," but not my own face. Likewise, in my dreams, I can project a full female body for myself and a face that registers as "me" to go with it even though I've never experienced either in real life.
Like, if you take trans / intersex brain differences seriously, you start to see why there is so much apparent overlap between us and autistic and ADHD people. It's less "my brain is broken" than it expects different inputs.