Lucas looks up from his bowl to find Frisk's bowl already empty by a quarter; this is both very surprising (that was really fast for such a small person...) and almost a little flattering, since Frisk clearly seems to like the soup a lot.

He idly stirs his own bowl with his spoon while he savors his last mouthful of soup a bit more slowly. This also gives him ample time to consider Frisk's words with great interest. "Burgers and fries...well, Boney likes those things too. I think they were made of meat and potatoes, back home? But that might be different somewhere else too, yes..." He pauses, sipping a bit more soup. "Are dog monsters--very different from regular dogs? ...And, what's 'kibble'?"