Alex glanced up from where they stood at David's rear's side, near to their exposed crotch. Much as Alex was attracted to personalities and not bodies, there was a certain desire for a masculine form that he couldn't shake. But is that me thinking of me, or me thinking of David? the transman wondered to themselves.
But they didn't have to think long about that. It's about me, he realized. I've always thought David was either gender-fluid or actually trans themselves, he considered. Maybe this is a chance to get them to realize it?
"If I was a centaur, I'd want bigger," Alex offered up as an honest thought. "But, you know, you've always been a bit iffy on your appearance as a man, David," Alex said, being straight with his friend. "Have you considered... either going all in, or, you know, switching to the other team?" he asked.
David looked over Alex's female form, regardless of thinking of them as a man 'on the inside'. And this discussion had come up before... about them feeling uncomfortable in their own body. The centaur-ness didn't really fix that, but it also didn't make it worse... it just was, just as when they'd been human. But Alex had previously pointed out that he felt uncomfortable in his body before reaching a state where he was at least comfortable being him, even if a lot of closed-minded people treated that like Alex burning bridges when he wasn't.
"You're serious?" David finally asked, unable to decide. "You really think I need bigger changes right now?" they found themselves asking.
"Honestly, dude?" Alex began, placing his hands on his hips. "You definitely should swap your penis for a vagina," the transman said. "Who knows... maybe you'll find it more comfortable?" He paused, then added: "I mean, you can always change it back, yeah?"
"Yeah," David nodded in response. They looked to the phone in their hand. 'David has a fifteen inch penis when hard' said the sentence about them. 'David thinks Alex wants to fuck them' it said after they hit refresh. David frowned a bit. 'The centaur stands ninty-three inches tall'. They blinked. I think this thing always has numbers written out as words and uses whatever can make them single measurements, they realized. Like fully inches rather than saying 'seven foot nine' because that'd be more than one word.
David hit refresh a few more times until it eventually said 'Between David's rear legs are the genitals of an average mustang stallion'. There it is, they considered, taking a breath. Alex was still admiring David's length when they swapped stallion for mare. The sudden alteration made Alex's head jerk, forcing him to look inward as David's long horse-cock was gone before his eyes. He looked inward to their new, thick-lipped mare slit and two teats than hung from the bag of flesh before it.
"Healthy," Alex remarked without any determinative inflection. It wasn't a good or bad thing in Alex's mind, simply a statement of fact. He'd be happy if his friend was happy.
"Huh," David said simply. "Well... that's different," they said, their hardness being replaced with wetness... their rear legs rubbing together against their vulva a bit as they repositioned their rear legs.
"How's it feel?" asked Alex.
"Honestly..." David trailed off, considering their answer.