She asked what an account was, but neither seemed to be able to answer... "It's a dumb question because we never had to think about it before so we can't answer it!" durr lol
@Serkket Presumably it'll be revealed at some point, but he may just be embarrassed by how touchy-feely his mom is and how she calls him like he's a little boy.
@Serkket He's a teenager, and she's his somewhat doting/clingy parent. Lashing out due to embarrassment. Kind of a form of being tsundere when you think about it, I guess, since he probably still loves his mom.