Mordechai: You know, Mommy, some buildings are higher than ours. Like they can have 13 floors!
Me: that's true.
I hope only goyish people live there.
Oh? (wondering what's so bad about tall buildings)
Yeah, because on Shabbos it would be hard to go up so many stairs. (pauses, thinking) Probably those buildings are not for living anyway, just for offices.