Oldie but goodie from the bathroom walls in an engineering library...
Code:
PROOF THAT WOMEN ARE EVIL:
(1) "Women mean time and money." --> women = time X money
(2) "Time is money." --> time = money
(3) Combine 1 and 2 ... --> women = money X money
(4) "Money is the root of all evil." --> money = √evil
(5) Combine 3 and 4 ... --> women = √evil X √evil
= √(evil X evil)
= √(evil ^ 2)
= evil
Women = evil, QED.