"Still tells people something," Robby points out. Fish at the bottom, fish that move and swim; that show their ability to move into action, and what will eventually break them into inaction. The same goes for the less-initially-inclined. "It's the quiet ones you gotta watch out for."

Which, if he knew more about fish, Robby would make some connection there--but he'll use a familiar (maybe familiar) saying to make his point. (A point--and in whose favour? In those doing this to them, or theirs? He's not going to be the quiet one who changes shit, that's for sure.

He can't even make up his mind on a chocolate bar, right now.)

He hums though, on news about the guy's mother; might comment on the guy's own experience with sports, though all he does manage to get out is a look at him, a wince and a 'Yeowch' for that unfortunate event with the event. But then apocalypses are mentioned, and his semi-humorous look doesn't fade as he thinks to glance at the other guy again. But briefly. A small chuckle.

"Yeah? What book apocalypse was that?"

Because clearly, this guy had to stop an apocalypse for an essay.