She gets it

(Scene opens with boys watching disabled child carried onto Great America ride)
Alpha: That’s so sad, he can’t walk or even move his head.
Me: Yes, but look, his big brother is holding him up so he can have fun too. It’s why I’m so lucky that you guys can walk and talk. And mostly well behaved.
Alpha: (mean mug)
Other Mom In Line (starts laughing) Sometimes you can’t have too many expectations.
Me: (nods sagely) Sometimes you have to set that bar on “average”.
(collective children mean mug)