If someone want to do something on a unusual place where are not needed tools or materials.
Want to do impossible things.
My brother came to me to the swimming pool yesterday and he wanted me to help him with making a snack. Looking at him I said idly: Here? You're throwing monkeys out of the South Pole?
My girlfriend want me to pay a boat-trip. She thinks that I'm gonna to throw monkeys out of the South Pole, I'm not a millionaire.