Oh, I know what kind you're talking about!! Katsura-kun got me started on watching those too.

[He doesn't cry obnoxiously or anything. Regardless here's Tenka, being supportive as always. Though he just laughs faintly at her explanation and shakes his head.]

It's.... It's a human thing. Mom did it for me when I was younger and sometimes I do it for my brothers --

I think it's something that people can miss from their childhood. Nothing bad about it.