Dad: "Have a good day!"
Noah, walking to the door: "Will do."
Dad, noting that Noah is wearing a thin long sleeve shirt and no jacket: "Stay warm."
Noah: "I hope so."
Dad: "You do understand that staying warm has less to do with hope and more to do with attiring yourself appropriately in layers, right?"
Noah, continuing to walk to the bus stop: "Yup."
If you’re gonna to be dumb, you gotta be tough. [Source]