"...Happy Boxes?" Frisk has no idea what those are, but Lucas's tone makes them not entirely believe that name. It reminds them of friendliness pellets. And then they think of screens and of their fight with the horrible thing Flowey turned into. Ew.

"Adults say watching TV too much can rot your brain, but I think that's just trying to keep kids from doing it all the time. Why'd people buy them if they can hurt you?"

Anyway, moving on from that a bit-- "She is! But yes, she might not be. She might want a cat instead. Or something else." Despite their words, they look proud Lucas seems to believe in them.