Sometimes intentionally, and it freaks my parents out that I talk like that to strangers’ kids.
My sister has requested that I bring my teacher voice & face along on her bachelorette weekend in order to keep the other bridesmaids in line. I giggled when she asked. I’m not sure if she knows what she’s asking for.
I did this to my brother a lot — he liked to rock back on the dining room chairs, and I was working in a first-grade class where “four on the floor” was an important mantra thanks to the tennis balls on the feet of the chair. You rock back on one of those and you end up on the floor.
What was worse was when I would walk past and without looking, noting it, or breaking from conversation, tilt the chair to put it back the way it was supposed to be. While he was still in it.
Then he was too mildly freaked-out to be annoyed.