maffick
To celebrate a victory in a boisterous manner.
historical, intransitive
[…] we crown our work by putting into our children’s hands a book that reeks of Jingoism, Imperialism, and Patriotism; that “mafficks” on every other page, that sings the glories of all the ruffianly kings who bore rule in the Dark Ages, and never fails to applaud their most disreputable military adventures!
Where it comes from
Back-formation from Mafeking, humorously treated as if it were a present participle (mafficking), from the celebrations in London after the relief of Mafeking during the Boer War.
Adapted from the Wiktionary entry maffick (CC BY-SA 4.0).