I've decided that between 8pm and 9pm on Monday evening I'm going to be gender-fluid and identify as a woman.
As we're told this is a real thing, and further, we're told to accept it and respect a person's decision, I trust my local swimming baths will be accommodating and respect my right to identify as a woman for the hour I'm there.
My reason for choosing to identify as a woman is so I can share the women's changing room with a stunning yummy mummy who goes to the baths the same time as me. I suspect she may find it uncomfortable and object to me being there, but if she doesn't accept and respect my gender-fluidity for the hour, then clearly she must be genderfluidphobic.
I think all of the above is entirely reasonable and is in no way utterly absurd.