Origin: back-form. < Mafeking, where unrestrained celebration marked the successful Brit stand against the Boers (1900)
See maffick in American Heritage Dictionary 4
intransitive verb maf·ficked, maf·fick·ing, maf·ficks
Origin: After Mafeking, South Africa, town with a British garrison besieged for 217 days during the Boer War whose relief (May 17, 1900) was celebrated in London.