They were okama.

[He glances back at Zoro, though he doesn't exactly expect him to get why this was such as issue. It's going to sound ridiculous (and probably like he's a discriminating bastard) without all the information, and Sanji isn't willing to give him that.]

There wasn't a single goddamn girl on that island, and did you hear where Luffy ended up?!

[The non sequitur is enough to get Sanji to unfold out of his defensive position as he sits up, letting one of his feet slip off the couch and onto the floor so he can make random angry gestures with his hands]

I mean, what the hell?! I could've killed that idiot. He's off living with a bunch of gorgeous women and I get stuck with these aggressive assholes who just want to be women and think everyone else should, too— What kinda bullshit is that?! I got stronger, yeah, I had to, that's how I learned Sky Walk, too. Just trying to get away from them.

[He slumps back against the couch again, digging a hand into his pocket and pulling out a cigarette that he immediately jams into his mouth and lights.]

They were good cooks, so there's that. I learned more than just how to be a better fighter. But fuck if that wasn't the longest two years of my life.