the ringmaster, leader, big boss, C.E.O., ruler, mr/ms BIG, E.T.C. of a situation; the one whose name is invariably 'on the line', that the 'laws' come to first in the case of a problem!! the main principal potentate!
(sex of the person irrelevant!!)
the showman @ that group house next door apparently kicks them all outside to smoke, lets' start calling them 'the hackers'!!
had to go see the showman, to beg for more money!
give'em a twist, a flick of the wrist, thats' what the showman said!! (-from: 'i've got a lovely bunch of coconuts')