Houseboats

Jack told me out of the blue today it's a good thing we don't live on a houseboat, because "then you don't have a car to go to the store and you have to only eat fish."
I told him that often if you live on a houseboat you keep a car on land so you can drive places. He then asked, "Do you have a bridge to get to the boat?" "Yes, usually you park your houseboat near a dock." "Oh, that's pretty smart. Do you think if Dad wasn't allergic to pets we should live on a houseboat shaped like a dog house?" (To which he started giggling and laughing at his own joke. I LOVE watching childrens' senses of humour emerge...they are rather bizarre in such a cute way.)