MacGuffin Is the Term We Use To Cover All that Sort of Thing: To Steal Plans or Documents, or Discover a Secret, It Doesn’t Matter What It Is
Only Three People Understood It: The Prince Consort Who is Dead, a German Professor Who Has Gone Mad, and I Who Have Forgotten All About It
The Labour of Two Days, Is That for Which You Ask Two Hundred Guineas! No; I Ask It for the Knowledge of a Lifetime.