This analogy holds for proposals of many kinds.

You want to say, I have a cooked chicken, leftover rice, and soy sauce in the fridge, but I need a pot to make some fried rice, which by the way will taste so good you'll want to come over and have some -- 100 of my friends always do.

You don't want to say, I'm hungry, and I know how to cook, so give me some money for a trip to the store and I'll figure out a meal -- trust me.