A childhood belief about marriage

Once when I was very little, I told an older cousin that I wanted to marry my brother when I grew up. I believed I could do this -- I didn't know anything about incest at the time. When my cousin told me that I couldn't marry my brother because we were part of the same family, I yelled, "Shows what you know! My mommy and daddy are married, and THEY'RE part of our family, too!"