In politics, it is a second stream of bullshit that mirrors that of someone else with a mutual interest of deception. The matching steam of deception is called a parabollock mirror from the British root of bollocks, representing bullshit or deception.
An an example, from Canadian politics, is the introduction of a cover story by Nigel Wright to match the legally protected stream of bullshit that Stephen Harper has been offering over the last couple months on the Senate expense scandal of Mike Duffy. In this example, Stephen Harper looks to his former staffer to provide a cover story of mirrored deceit and thus forms the parabollock mirror of his untruthful story.
by Charlie Currie, wordsmith November 21, 2013