One student started talking about coffee. He asked what people put in it. One of the girls mentioned cream and sugar. The boy said that no, that's what kids put in it. Adults put old in it.
That's not a typo. He said "old".
He continued with this reasoning. He said that coffee makes kids old. One girl complained that she drank coffee, but she wasn't old. The boy said that she might be 17, but the coffee made her older.
So, I asked what about older adults who did not drink coffee. He said that they just age normally, not extra aged because of the old in coffee.
It made only a smidgen of sense. Of course that was the point.
The stuff these kids come up with!