Me: Well, you know something? Kavya is sometimes a bad listener. Do you know why? Because she's thinking complicated and interesting thoughts, and she's so busy thinking them, that she doesn't always listen to Mommy.
Me: So it's okay if you're a bad listener sometimes. I like it when you're busy thinking complicated and interesting thoughts.
A: [oddly long pause, and then, with mischief in his eyes] I'm sorry, Mommy. I didn't hear you -- I was busy thinking about something...
At which point, we both totally lost it. :-) :-) :-)