Conversations with kids

JB (looking through a see-and-learn book): That's a submarine...
Me: What is a submarine?
JB: A submarine is a thing that goes under water.
Me: What kind of thing?
JB: A boat. A boat that people live on that goes under water... (turns page and points) That's a fire station.
Me: What happens at a fire station?
JB: A fire station is where the firemen are and where the trucks are waiting for an emergency. (Turns page.) That's a space shuttle...
Me: What's a space shuttle do?
JB: That's a rocketship... Like an airplane that goes into space and stuff.
Me: (nodding, totally impressed with this display, but trying to keep my cool)
JB: (turns page and points for me) That's a movie set...
Me: What's a movie set? (I'm truly curious how he's going to explain this one...)
JB: That's where they fire up movies...

I lose it!
Hilarious!