The Inevitable Question

This morning on the way to preschool Ben was showing me how he can sing "Where is Thumbkin?" holding up his thumbs and singing the song. Then he went on to Pointer, Pinky, and Ring Man. As I walked him up to the building he asked, "Mommy, what is this one called?" I looked over and saw that he was holding his middle finger up at me. I resisted the urge to tell him that one is called "Birdie." Instead I said, "Put that one down, honey. That one's not polite to hold up."

"Why?"
"Because."
"Why?"
"Because."