Oh, Inigo knows what he's doing. Teasing what he's saying, making him sound dumb - like he's shy, immaturely so, that he can't say the word sex and it has nothing to do with where they are.

He throws Inigo an unimpressed look; though, it rather looks like he's sulking with that pouty lower lip than anything to be concerned about.

"Since when did you get so cocky?" Poking at him this way, trying to get him worked up. Who does he get it from! Tidus never treats him this way! "You wanna invite anyone with us?"

Is that it, bro?? You want to invite more people to this conversation??