or, if it's easier ... hold a mirror up to your monitor. ;)

Since we're already past the "spoiler" area...

The version I heard was,

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

Correct # of syllables, plus the first line flows a little better

Great job, guys! Ever notice that 2=1?
Let a=b.
a*a=a*b,
a^2=ab,
a^2+a^2=ab+a^2,
2a^2=a^2+ab,
2a^2-2ab=a^2+ab-2ab,
2(a^2-ab)=a^2-ab,
2a(a-b)=a(a-b),
2a=a,
2=1.

Watch out anytime you walk across a bridge, or drive a car -- it looks like math doesn't exist anymore. :D

...,
2a(a-b)=a(a-b),
2a(0)=2(0),
0=0;

ZERO
 

Math still exists... Just have to use it correctly.

The following statement:
2a^2-2ab=a^2+ab-2ab is basically stating
0=0.

So anything multiplied by Zero is still Zero.

1*2*4*0 = 5*6*7*8*9*0

Jinx
 

Dang... I was waiting for somebody else to post a proof of error, nobody did, so I posted it myself.. Only to find a proof when I submitted....

Actually, the problem lies just after that, guys:
when you divide by (a-b) to get 2a=a, you must realize that (a-b) is 0, thus creating an invalid equation (divide by zero error a la <a href="http://www.tuplay.com/display.asp?i=32&p=1">Intel</a>).