What would they be doing then, just hanging out in the "women's" bathroom, waiting for studly trans men that are attracted to women to stand next to them and pee?  

I mean, for what reason would this studly trans male be peeing next to them? Are they going to install urinals in the women's bathrooms to accommodate this? 

Maybe I'm confused, but wouldn't a man that's attracted to women be a heterosexual, or bi-sexual?