My 6-year-old granddaughter just cracked us all up the other day!

My six year old granddaughter is the apple of my eye. She is so much fun to be around. A few weeks ago, she was at the house with her mother (my youngest daughter), and she tooted rather loudly. I said, "Cooper, did you forget to say something?" And without blinking an eye, she said, "Oh yeah, pull my finger!" We all just cracked up. I wonder where on earth she might have heard that?????