Officious intermeddler

An officious intermeddler is a person who voluntarily, and without request or pre-existing legal duty, interjects him- or herself into the affairs of another, and then seeks remuneration for services or reimbursement. Example: Person "A" leaves for vacation for two weeks during the summer. Person "B" mows "A"s lawn. "B" requests payment for this service. Under common law doctrine, "B" is not entitled to any payment from "A" beyond whatever "A" cares to give. If B tries to coerce payment, B is an officious intermeddler.