Revelation

Brett is a singer and a swinger.  Whenever a park is near, he begs for me to push him on the swing and could literally go back and forth for hours.  Coerced by the backward and forward motion, he belts out songs like, "Dynamite", "Staying Alive", Life is a Highway", and more.  Tonight as I pushed him, he sang about the moon in the sky.  After singing a few (self-created?) stanzas, he asked me, "Do you know who taught me that song?"
 Me - "No.  Who taught it to you."
Brett - "My mom."
Me -"Wow?  Really?''
Brett - "Yeah, my other mom."
Me - "I didn't know you had another mom."
Brett - "Yeah, I don't know her name. (pause) Oh, it's um, Lucy, like the dog Lucy!"

The things you learn from your children!  I hope this other mom is nice.