"Oh. Right. It's still kind of....weird to think about it all like that. I hope they don't come here though. They sound....scary."

And given that Clementine has experienced the walkers back home, that is saying something when this kid is scared of something nowadays. But the way Eight described them...the way they would just kill anything different to them. It's senseless and cruel, especially to the mind of a nine year old girl.