And it doesn't matter who you are as the explaining parent, where you live, the language you use to describe it. I have heard it from moms across the country with kids udergoing casting... inevitably, people will always pose the question... "You mean it doesn't come off?" or "Well, how does she take a bath?".
Even though as the parent you are screaming on the inside "Have you NOT been paying attention???!!", you calmly take the time to explain that no, the cast does not in fact come off and that she cannot take a full bath.
I get it though. Most casts that kids get are waterproof, so people probably generally assume that this cast is the same. And I have also heard plenty of people refer to molded braces as "casts". Afterall, the very process of molding the brace to the shape of the body is "casting"...
What is more entertaining to me is that even though I have never had this conversation with Abby (or even in front of Abby), she somehow has picked up on it. So, at 5, she gets that when she explains to people about Makenna's hug machine, she must be very specific.
So her explanation is consistent:
"My sister has a hug machine. See (lifting Makenna's shirt to show it off) Her back doesn't really grow straight. So she can't go to the pool. Yep, she's got a hug machine. Doesn't come off. Can't get it wet."
Thank you, Abby :)