ROMANCE ARITHMATICS
smart man + smart woman = romance
Smart man + dumb woman = affair
Dumb man + smart woman = marriage
Dumb man + dumb woman = pregnancy

OFFICE ARITHMETIC
Smart boss + smart employee = profit
Smart boss + dumb employee = production
Dumb boss + smart employee = promotion
Dumb boss + dumb employee = overtime

SHOPPING MATH
A man will pay $2 for a $1 item he needs. A woman will pay $1 for a $2 item that she doesn't need.

GENERAL EQUATIONS & STATISTICS
A woman worries about the future until she gets a husband. A man never worries about the future until he gets a wife. A successful man is one who makes more money than his wife can spend. A successful woman is one who can find such a man.

HAPPINESS
To be happy with a man, you must understand him a lot and love him a little. To be happy with a woman, you must love her a lot and not try to understand her at all.

LONGEVITY
Married men live longer than single men, but married men are a lot more willing to die.

MEMORY
Any married man should forget his mistakes, there's no use in two people remembering the same thing.

APPEARANCE
Men wake up as good-looking as they went to bed. Women somehow deteriorate during the night.

PROPENSITY TO CHANGE
A woman marries a man expecting he will change, but he doesn't. A man marries a woman expecting that she won't change, and she does.

DISCUSSION TECHNIQUE
A woman has the last word in any argument. Anything a man says after that is the beginning of a new argument.

COMPREHENSION
There are 2 times when a man doesn't understand a woman -- before marriage and after marriage.