Proof by clever variable choice

“Let A be the number such that this proof works. . ”

Proof by tessellation

“This proof is the same as the last.”

Proof by divine word

“And the Lord said, ‘Let it be true,’ and it was true.”

Proof by stubbornness

“I don’t care what you say-it is true!” —36 Methods of Mathematical Proof (BlueMoon.net)

Thanks, Josh… this makes a great companion to Twenty Special Forms of Rhetoric.