what five grand a year gets you

Me: What did you do at school today?

Henry: Hmmmm . . . . (thinks for most of drive home). I had snack table with Tyler.

Me: That's nice. What did you have to eat?

Henry: Tyler and his sister are turtle twins.

Me: They're what?

Henry: Turtle twins.

Me: I'm sorry, I didn't get that. They're what?

Henry: (exasperated by my stupidity) TURTLE TWINS!

Me: ??????

Henry: You know, not identical. Turtle twins.

Me: Ohhhh . . . fraternal twins.

Henry: That's what I said. Turtle twins.