Not in this house

One day I decided to give my kids some sex education (my wife was too chicken) Our daughter was 8 and our son was 6. I was going quite well, but then I mentioned mum and dad had sex sometimes, not to have children, but for enjoyment. My daughter replied "What ... in *this* house?" She stormed off into her bedroom, packed her school case, and wanted to leave home ! I followed her around the block, and talked her into returning home after she cooled off. Our son was more concerned about his sister. "Is she coming home dad?" The next day, everything returned to normal. Overall, I figured it was pretty painless ...