E.g. You want to test if a woman is a witch. You burn witches, but you also burn wood. This means witches burn because they are made of wood. Wood also floats in water, just like a duck. So therefore, if she weighs the same as a duck, then she is made out of wood, and is therefore a witch. Now you must weigh her on a set of large scales with a duck, and if they weigh the same, she is guilty of being a witch.
After the style of, or resembling the humour of, Monty Python's Flying Circus, a popular British television comedy series of the 1970s noted especially for its absurdist or surrealist humour.