My trip to McDonald's

So I'm sitting at McDonald's on Sunday afternoon. Jacob had run off to play, and I was sitting at the table watching.

A family shuffled in and sat at the table behind ours: Grandma, her grown son, and his kids. They had apparently just come from church. I wasn't trying to eavesdrop, but...

Grandma was a Sunday school teacher, and one of the kids was in her class. She went on for several minutes about how some younger teacher was doing everything wrong, not like how she did things. She was critical of everything this other teacher did. Now, I certainly don't know the details of what really happened, but she just had nothing but unkind things to say, and she was saying them in front of the children. I mean, that's one teacher undermining the credibility and authority of another teacher behind her back.

She went on to quiz the grandson who was in her class what they went over that day. The boy was pretty mopey and unresponsive, so it was really just Grandma talking to herself:

"Who did we talk about today? Abraham? What did he do? Talk to God? What did God tell him?" etc...

So, the kid absorbed 0% of the class lesson, and then got an earful of Grandma bad-mouthing another lady from church. He was pretty withdrawn, didn't want to eat, didn't want to play, and Grandma just kept hassling him about the lesson. Eventually she essentially ordered him to cheer up.

I'm not sure what the lesson was supposed to be.