"Ah.." There's actually a pause after his voice trails off like that. If not just because Inigo - while still smiling on the outside - has completely frozen up on the inside for a moment at the very mention of that d-word..

"No, no, no, no!" He makes it sound light, playful, but he's shaking his head over here as if his very life depends on it. "It's fine!"

Because he's sure Taiki only means dancing to watch, but Inigo knows how this ends. Every time he watches someone else dance, he's inevitably dragged into it, and he might not survive that!

"This isn't me time right now-- it's you time! It's Taiki time!"