I emailled this lil' anecdote to my family today, but it still cracks me up, so I thought I'd share it here, too:
Today in the car, Betty asked me out of the blue, "Mom, what's sex?"
I tried not to look shocked and stay calm, "Um, where did you hear that?"
B: "It's on the radio right now. The guy is singing, 'This sex is on Fire!' So, what's sex?"
Me: "Oh! oh yes, so he did. Actually, um, what he said is, 'This section's on fire.' So. That's what he said. Section."
B: "Section? What's a section? Why is it on fire?"
Me: "Umm. Yeah! That's a really great question! So, you know. Section! Like, this section of the house, it's on fire. That section over there, it's not on fire, but this section is. It's probably a firefighter singing, actually. Talking about his job. That's all."
A few minutes later, Betty said, "I want to hear The Firefighter Song again."