Cards Don't Talk!

I gave our 4 yr. old a used Wendy's gift card. She looks it over and asks what the numbers are for on the card. I told her that every card comes with numbers. She turns to me and says, 'Mom, cards can't have numbers they don't talk!' Had to clarify the difference between phone numbers and card numbers. Don't think I should have to do this at 4 years of age! They are growing up way to quickly these days.