Is there an otologist in the house?

Emily: What's a second class lover?
Me: WHAT? (in a very loud voice)
Emily: A second class lover.
Me: What kind of homework do you have?
Emily: Science. Do you know what a second class LEVER is?

Whew...I didn't know what a second class lever was. I do now. Boy, I'm sure glad I didn't have to explain what a second class lover is. I'd have to send Emily to Cheryl's "Where do babies come from?" class. And then I'd have to start saving for therapy.