Theorem: Mathematical Proofs Are Strange Things Poem by A.S. Wilson

Proof: Mathematical proofs are strange things.
They can prove anything you desire,
provided you don’t care whether they are true.
All you have to do is to assume
something true that isn’t
and you can prove anything.

Assume 2 is an odd number,
(which it just may be… as odd as 53 anyway.)
and I’ll show you that two plus two equals five.
I was shown that proof when I was eleven,
just before being molested for the first time.
He said, “Look, two plus two is five.”
And later he said, “I’m not gay.”
And to prove it, he married my aunt.

That is what is called a proof by contradiction.