An officious intermeddler is a person who voluntarily, and without request or pre-existing legal duty, interjects 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.

References

Second Restatement of Contracts Sec. 74

Black’s Law Dictionary