You simply explain, calmly and clearly, “Yes, I see the great big fat lady too dear, but it’s not polite to point.”
Dr. Watson
“Manners require time, as nothing is more vulgar than haste.” – Emerson
I’d also tie it in to something recent which happened to the child which embarrassed him/her.
“Yes, I see her. But when you say things like that you can make her feel like you did when you spilled your milk this morning. And you didn’t like that, did you?”
I think this helps children understand that everyone, now matter how different they are from the child, has feelings too.
I was on the receiving end of something like this once. At a wedding in a church, a little girl (age 2-3) in the pew ahead of us kept turning around and looking in our direction. At some point I reached up and scratched the side of my nose with my index finger (a la the Seinfeld episode).
The girl says, loud enough for 20 people to hear, “Mommy, that man picked his nose!”
What the hell can you do in a situation like that?
Always offer an apology to the person at whom such a remark is directed. Don’t elaborate or offer excuses based on age or anything else. “I’m terribly sorry she said that.” Then immediately explain to the child about hurting feelings (I like the spilled milk thing).
Thanks for the advice, guys. We are already working on her manners, overall, but this one knocked me for a loop because it is the first time she’s ever commented on someone’s physical appearance like that. I’ll be a little more prepared next time. I think the apology idea is a good one.