And if such a thing was possible, if rare, I would probably have a wank. Just to see what it's like from the other side.
Then, I'd try to guess my clothes and shoe size and order some stuff off the Internet so I could leave the house.
At work, since I speak to people on the phone a lot. I'd marvel at how much more my clients are willing to listen and take what I say on board so much more.
When I go to the gym, I use the male changing rooms since that's what my body says and I know how my male body will disturb the women there.
I still put the welfare of others first because I was socialised female...