This can't be happening . . .

On Friday, while driving to drop the boys off at their dad's, the unthinkable happened. Nicholas and I had our first sex talk. Here is an overview of our conversation -

Nicholas - Mom, did you scream when Christopher was born?
Me - No, I didn't scream.
N - Did you scream when I was born?
Me - No.
N - Why didn't you scream? The Hulk's mom screamed when he was born.
Me - The doctor gives you medication that makes you feel better so it doesn't hurt and you don't have to scream.
N - Oh. The Hulk's mom didn't have that medicine because she was screaming. How does the baby come out?
Me - The doctor takes the baby out.
N - Where does the doctor take the baby out of on the mom?
Me - He just takes the baby out because it's time for the baby to come out.
N - But where does the baby come out of the mom?
Me - It's private for girls, you don't have to worry about that.
N - Where does the baby come out, just tell me, I won't tell anyone.
Me - It's not that you can't tell anyone, it's just that it's girls stuff.
N - Tell me mom, I want to know! (yelling at this point)
Me - The baby comes out of the mom's private parts.
N - Like the mom's penis?
Me - No, girls have different parts and that's where the baby comes out of.
N - What it's called? Is it the nuts?
Me - No, it's called the vagina, girls don't have the same parts as boys do.
N - So the baby goes out of your butt?
Me - No, it's down there but it's more like where you go pee from.
N - Oh, OK mom. So the baby comes out from where you pee.
Me - Something like that, yes. This is something we only talk about with our family. Babies and private parts are private, so if you have questions and want to talk about only talk about it with your family not your friends, OK?
N - Mom, can we listen to the air song now?