"Taking Back Control" (with apologies to Lord Alf):

Forward the Brexit Brigade!’
Was there a man dismay'd?
Not tho' the leaver knew
Boris had blunder'd:
Theirs not to make reply,
Theirs not to reason why,
Theirs but to do AND die,
Into the valley of Death
Rode the seventeen million
Taking the rest of us poor sods with 'em...