Embarrassing moments

We are waiting at the school playground for Nidhi. Ari who has been sitting at the bench next to me decides he wants to go check out the drinking water fountain. He gets up, puts his pretend glasses down on the table, points at the octogenarian sitting opposite us and says loudly
"Make sure this man doesn't take my glasses."
I, trying not to look at the man and hoping he hasn't heard or understood, say "I'm sure he doesn't want them. He's got his own."