Vou contar uma anedota em inglês:
A 17 year old boy invited a 15 year old girl to a movie featuring Marlon Brando and Marilyn Monroe. In this movie, Marlon Brando played the role of a tough guy. In one scene, he ripped off Monroe's blouse and demanded : I want what I want when I want it .
After the movie, the boy walked the girl home and in a dark alley ventures to rip her blouse off and imitating Brando said : I want what I want when I want it. The girl replied : You have what I have, when I have them !
So here begins Future Trading 101.