Without being able to define "man", they really can't say what it means for a "man" to be pregnant.
This exchange between Matt Walsh and a doctor illustrated this quite well:
https://www.dailywire.com/news/49589/wa ... matt-walsh
left-wing gender theory can be entirely dismantled and debunked with one simple question: What is a man? All of the talking points, all of the sermonizing, all of the stuff about "transgenderism" and "gender fluidity" and "gender spectrums" — all of it is blown to pieces by a question that my six-year-old could answer. No leftist who espouses gender theory can provide a coherent answer to this question. Few will even attempt it.