An American businessman finds himself on a cross country train ride. His companions in the train cabin are a Russian businessman, a Cuban businessman, and an American lawyer.

They start to talk, and become fast friends. After about an hour or so, the Russian pulls out a bottle of expensive vodka, and pours everyone a drink. The others are amazed as to how good the vodka is. After pouring the drinks, the Russian takes a swig right from the bottle, opens the window and throws the bottle right out the side.

The American businessman says "Why the hell did you do that? That was an expensive bottle!"

The Russian replies, "Nyet, my friend, I have plenty more. There is lots of vodka in Russia! There is so much vodka that old women and children has plenty of vodka to drink. So since there is so much vodka, we have to throw it out the window to get rid of excess."

The American businessman thinks that's an interesting idea.

After a while later, the Cuban businessman reaches in his briefcase and pulls out a box of hand-rolled cigars. He passes the whole box out to his friends, takes one for himself, lights it, takes one puff and throws it out of the window.

The American businessman says "Why the hell did you do that? These are excellent cigars!"

The Cuban says "Si, mi amigo. In Havana we make many excellent cigars. But since we have no one to sell them to, we must keep them in Cuba. So everyone always has good cigars. We have so many that we must throw them out to get rid of the excess."

The American businessman thinks to himself, "Hmm...That's an interesting idea. Get rid of excess supply by...simply throwing it out the window! The Russian threw vodka out the window, the Cuban threw his cigar out the window...what can I throw out?"

He thinks for a second, stands up and throws the lawyer out the window.