[If Prompto is bothered by anything Puffball does, he doesn't remark on it. He just smiles at Ira as he listens, nodding a little bit.]

What kind of world do you come from?

Oh y-yeah! I could be asking people that!

[That was an especially not-so-bright moment, he's wasting an opportunity here to learn about other worlds, and naturally report back to Noct with the coolest information he can find.]

Okay okay. Tell me something cool about your world that I can brag to Noct about.

[It's a subtle way to ask.]