[As the first words of the recordings play, a pleased smile stretches over Walter's face at having learned something new and of future use.

But, when Seras finally speaks and mentions the youth's name, the smile turns into one revealing of Walter's own mischievous streak. He already has something planned for the brat.]

He deserved it. All he did was make excuses and then try to waste my time. I've already promised someone I would look into working on a more reliable back-up communication system.

[And from Walter's perspective, he had tried to be helpful first. The name-calling had only come once the boy had displayed a pronounced unwillingness to learn.]