"Mommy, can you play the Mario theme on your violin?"
"You know..." The little guy belted out the tune in his nice six-year-old voice.
"Hold on," I said. "Let me get the violin."
Somehow I managed to produce the tune, not quite perfectly, but good enough for the little guy.
A little while later he came in holding some styrofoam concoction with a pencil going through it.
"What the heck is this?" I asked.
"A Mario propellor hat."
Even at school, he draws Mario pictures all over his papers. I think it's an obsession. I don't know if I should laugh or be worried.