An Economist's Speech

The following is supposedly a true story;
An economist was about to give a presentation in Washington, DC on the problems with Black-Scholes model of option pricing and was expecting no more than a dozen of government officials attending. To his amazement, when he arrived, the room was packed with edgy, tough-looking guys in shades. Still, after five or so minutes into the presentation all of them stood up and left without a word. The economist found out only later that his secretary ran the presentation through a spell-checker and what was "The Problem with Black-Scholes" became "The Problem with Black Schools".

Yo Mama - Cave

Yo mama is so black, that when she was sitting on my couch, I thought a cave had suddenly formed on it.

What Am I?

Two zebras are talking and one asks the other, "Am I black with white stripes or white with black stripes?" The other replies, "Well I don't know. You should pray to God about that and ask him." So that night he did and God replied, "You are what you are." The next day he said to the other zebra, "I still don't understand what I am because God just said, You are what you are." The second zebra responds, "You must be white with black stripes or else God would have said, Yo is what yo is."