Claire wondered if there was an obvious way to distinguish between "penis-havers" and "vagina-havers" but as her mind adjusted more to the new world she realized that there were social clues people picked up on. People with penises--"males"--just moved differently from people with vaginas--"females"--regardless of whether they were men or women, a whole different set of categories. As someone with a penis and a relatively soft body, with breasts, Claire was a "male woman." With a start she realized that for the first time she had an identity she felt truly described her.
And in this new world she was bi along the man/woman axis but straight along the male/female axis. Females--whether they were men or women--attracted her. She found that the male her had more intense sexual feelings as she briefly fantasized about bending attractive female men or women over and plunging her hard penis into their welcoming vaginas.
"Hi, Claire!" a hot female man was walking toward her.