A little to much education!

Tonight at dinner we where discussing adoption with our children. We were talking about a women that we know that is going to put her unborn twins up for adoption. She would like them to go to a family that is not able to have children. I said to my husband that we should let some friends of ours, we will call them Mr. & Mrs. Smith to protect their identity, know about her since they are unable to have children of their own. Our 10 year old son says straight faced "why can't Mr. Smith get the sperm up in Mrs. Smith". Times like these it is so hard not to bust out laughing.