I once came across a number of spoof proofs the only one of which I remember is the:-

Proof by Deferrred Responsibility

At school: The proof of this is too complicated at your current stage. When you get to University you will be given a proof.

At University: You will know from the maths you did at school that it is true that..........

here is another limerick:
$$\frac{12 + 144 + 20 + 3\sqrt{4}}{7} + 5\times11 = 9^2 + 0$$

it says:
A dozen, a gross, and a score,
Plues three times the square root of four,
Divided by seven,
Plues five times eleven,
Is nine squared, and not a bit more.

Gib Z
Homework Helper
O adding to the spoof proofs

Proof By Imtimidation:
"Trivial"

I particularly like that one :D

Proof by Confusing Notation:
Good when you have access to at least 4 languages and special symbols.

Proof by Example:
"Lets try when n=2, the other 253 cases are analogous.."

mathwonk
Homework Helper
2020 Award
the one about the wife and mistress is funny, because true. that is really what mathematicians are like. but i suspect only a mathematician (or a wife of one) would know this.

SGT
At the time of the Iron Curtain, two mathematicians try to leave Polland by stealing an airplane.
They enter the aircraft and one of them tries to undestand the functions of the instruments. The other worries:
"Hurry up, we will be caught!"
"Calm down, I´m a simple Pole in a complex plane!"

$$\frac{\sinx}{n} = 6$$

$$\frac{\sinx}{n} = 6$$
i didnt get this one.

edit: oh, i see. you wanted to write $$\frac{\sin x}{n} = 6$$

There is three erors in this post.

I will finish this post before you can say Jack Rob