How do you get a baby?

Yesterday on my way home from picking up Landon from kindergarten we had this unexpected conversation:

Landon: "Mom, how do you get a baby?"

Me: "Hmmm....[trying to decide what to tell him]. Well, you have to be married."

L: "And then what do you do?"

M: "Why are you asking? Did someone talk to you about it or something?" [I was obviously trying to avoid having this conversation with my 5 year old!]

L: "No I was just thinking about it."

M: "Oh. Well....we will talk about it when you're older." [I was pretty sure this answer wouldn't satisfy his inquiring mind, but to my happy surprise it did!]

End of conversation. Hooraaaay! And what makes a 5 year old little boy think about these kinds of things anyways?!