So my parents invited me to go to their gym to swim with them (I used a guest pass), and it was hot so I decided to go.
I put on my swim trunks, an old binder (which is uncomfortable and doesn't bind very well at all anymore), and a T-shirt. I already felt uncomfortable because I could see my chest. Then my parents inform me I'll have to change in the locker room, because they don't want me to get their car wet.
So after swimming, I go back into the freakin' women's locker room to change, finding that the only private area is a tiny bathroom stall. I'm already in a bad mood, so I lock myself in there to get dressed.
And I nearly killed myself trying to get my binder back on. I have never had to put so much strength into anything in my life. I pulled on it, and I'm about ready to scream from frustration, and I can't hardly breathe, and I can feel a panic attack coming on. I'm basically flipping my ->-bleeped-<- in there, and making all kinds of racket.
But seriously, WHAT THE HELL. I have to go through all this ->-bleeped-<- to put the thing on because my stupid parents won't let me get their car slightly damp. I couldn't just go home and wait until I'm all the way dry and then try to put damn thing on. Of course not. And then my parents have the audacity to suggest I just go with a T-shirt (i.e. no undergarments; they don't know I wear a binder and couldn't understand just how difficult a time I was having). At just the idea of that, I felt quite sick, but they still didn't get it.
And now I'm going back to the pool again today, and I have no idea what to do. I don't want to try putting on the binder again, and the other binder will be soaking wet, and I
will have a panic attack if I wear a sports bra or go without undergarments of any kind. WHAT THE HELL DO I DO HERE? This just pisses me off to no end, that I can't even do something as simple as swimming easily.
And of course there's the whole thing that most public pools don't allow you to wear t-shirts in the water, and I have no suitable alternative. I mean WHAT DO I HAVE TO DO TO GET A BREAK AROUND HERE?! Ugh.

tl;dr - swimming sucks for trans guys.