Why are women so bad at mathematics?
Because men keep telling them that this (make gap with thumb and forefinger) is 9 inches.
The vector was walking down cartesian drive when he bumped into a confused Scalar.
The vector asked him what was wrong and he replied, "Help I have no direction."
One attractive young businesswoman to another over lunch: "My life is all math. I am trying to add to my income, subtract from my weight, divide my time, and avoid multiplying."