Zoro is confident in saying that Sanji is a man who doesn’t do what he’s told. Which is why, when a command accidentally slips from Zoro’s lips during foreplay, he is expecting to hear the cook’s scoff as he continues to do what he pleases.

“So, we’re gonna play it like that, huh, Cook?” “Oh yeah. We’re gonna play it like that,” Sanji returns, despite having absolutely no fucking clue what Zoro could possibly mean by that. --- Or: The Great Game of Gay Chicken Aboard the Thousand Sunny

Most days, Sanji considers himself a bundle of neuroses at best. He smokes a reasonable amount to distract himself from the anxious urge to play with his hair or bite at his nails or chew his lips, he wears layers and suits to avoid direct skin-to-skin contact he isn’t prepared for, and most importantly, he never ever looks at his back in the mirror. Usually these things work to keep him intact, to keep him here and sane and passably whole. But some days, they don’t. And that’s when Sanji needs it. Namely—the sex.

It’s like a high when the both of them resonate on that same frequency—two radios spitting static at each other ninety-percent of the time until they find overlap for one, just one, perfectly-played song. The music is brilliant and vibrant when it’s playing. It’s always over faster than Sanji ever wants it to be.

Three inches in front of Sanji's face, Zoro is wearing an expression that could wither stone. "What the fuck," the swordsman snarls, "do you think you’re doing." The remaining logical dregs of Sanji's brain recognize that he's just gotten himself into a pretty dicey situation. The rest of it apparently doesn't fucking care, though, because the absurd line of response he comes up with is to grin right in Zoro's supremely pissed-off face and say- "Well, what was your dumb ass doing?" In which the crew’s plastered, Zoro needs to blow off some steam, and Sanji gets taught a lesson or two.

There was a hook in the Cook’s galley floor. Zoro should've ignored it but it's not like he's all that good at keeping his mouth shut around Sanji.