A few days ago, Matthew asked if Uncle Zack had a mom. "Yes," I answered a bit incredulously. "Uncle Zack is my brother! He has the same mom as me!"
"Who's your mom?" Matthew responded.
"Grandma Linda! Grandma Linda is my mom and Uncle Zack's mom and Aunt Stephanie's mom!"
"Oh. Who was Uncle Zack's mom when he was little?"
"Grandma Linda! Who do you think your mom will be when you're a grown up?" I asked, thinking that this would finally get through and Matthew would realize, oh, OF COURSE, but . . .
Matthew looked at me completely seriously and said, "I have no idea."