~Moses, "The Old Testament" Deleted Scenes
When an aquaintance has a serving of delicious New Londons fries, this law can be utilized. The Moocher must first declare that he/she is taking some fries under the Rule of New Londons. The owner of the fries has no choice but to comply, for they know that they have mooched in the past and will mooch in the future.
"I hereby enact the Rule of New Londons. Fork some over."
"Dammit dude, fine, here ya go..."