maffick

(măf'ĭk)
intr.v. Chiefly British, -ficked, -fick·ing, -ficks.
To rejoice or celebrate with boisterous public demonstrations.

[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.]

to celebrate with boisterous rejoicing