"Sometimes," Tidus mimics, 'cause he's going to that calling out jerk who Inigo deserves. And in his defence, whatever Inigo's feeling right now doesn't cover any of what Tidus does with how dumb-headed Inigo is on missions!

But brothers, huh... he gives a look at Inigo, as if he's deciding on what he thinks. Quiet in his contemplating...

... ...

"Hey, Inigo, she just called you a kid. How do you feel about that?"

Yes that's absolutely what she just said.