Some funny math

ROMANCE MATHEMATICS

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 $20 for a $10 item he needs.
A woman will pay $10 for a $20 item that she doesn't need.

Now I'm sure you realized I did not come up with those but I had taken quite a bit of time to remember them and coming up with this snowboarding one will not be very easy either.

SNOWBOARDING MATH

Good Instructor + Good Student = Accomplishment
Good Instructor + Bad Student = Progress
Bad Instructor + Good Student = SWITCH
Bad Instructor + Bad Student = Holding up the chairlifts