Particularly when the parent isn't there?
We were at school breakfast this morning. The boy ahead of us in the queue to be served was appallingly rude and dismissive to the dinner lady- barking orders, no pleases or thank yous etc. No particular thing that you could have pointed at as being actively wrong (he didn't swear at her, for example) but just a rude attitude. I'd be mortified if my kids behaved like that.
I've known this boy, vaguely, for years. He's now 10yo. His mother had dropped him off and gone to work so wasn't present.
WWYD?