Once, while we were flying, my daughter leaned over and whispered, “Dad, I think I just got my period.” I gave her the emergency pad I always keep with me, and she hurried to the restroom. A few minutes later,

the flight attendant came by and said, “Sir, your daughter asked if you have a real pad. She said you gave her a liner.”I turned bright red — I didn’t even know there was a difference! Luckily,