In a fairly remote section of Appalachia still served by the itinerant peddler, one knocked on a farmhouse door.
Seeing him, the farmer's wife said, "I don't need anything."
"How about an aluminum pan?" "No, Please go away. I don't want a thing."
"A battery-operated brush?" "No." "Notions? Thread?"
"If you don't leave, I'll whistle for the men in the fields!"
"Do you want to buy a whistle?"