[ Why do they need to return? That's what Tidus thinks, but he knows it's kinda unreasonable, maybe, if they want to think about everyone returning back to their proper ages (Roland, too?). So he won't argue, not right away, give Inigo the space to change without him there as he's pulling down his pants - heading over to the heated pool first, but speaking louder over his shoulder: ]

What if everyone did stay younger? [ What then. ] What even happened anyway? You hear anything? I dunno why a train would make people younger...

[ But if it wasn't the train... ]

What if -- someone put a potion into the food! And that's what happened!

[ Intentional food messing! ]