For too long professors have been leading students astray by attempting to prove theorems to their classes. Through analytical and graphical techniques, obscure technical manipulations and multiple buzzwords, they go through the motions of deriving expressions. The resultant lack of legible and audible information inevitably drives students crazy. The most popular university level proof, this method involves large doses of vigorous hand waving and incoherent muttering.
Numbers seem to pop in and out of nowhere for no apparent reason.
It is usually accompanied by puffs of smoke and has been known to make use of mirrors. This is the methods of choice for Calculus profs of Germanic heritage. Unfortunately, some profs find this to be unacceptable. For these fascists a variation known as Proof of Infinite Assumption may come in handy. In less important situations a watered down version known as Proof by Violent Desk Pounding may be employed.