Chaos Theory essentially states that "Hey, shit happens".
The Universe is a pretty big place, and if you just leave matter laying around you never know what's going to happen. For example; given enough time, there may yet be an intelligent leader in the United States. Random stuff is always going to happen, so just chill out and smoke a fatty. In fact, scientists are too busy to care about what randomness is all about, so they came up with the catchy new-age antiestablisharianologisocialistomorphosed term of 'Chaos Theory'.
Scientists claim that there is no real way of predicting when something random will, will not, or may, or in fact may not occur. The only rational defense against randominity was developed by Albert Einstein in the late 1950s after his plate ran away with the spoon during one of his bipolar episodes. After his initial surprise, he came up with a solution by using the following equation:
The other Chaos Theory
There is that Chaos Theory, but there is another Chaos theory, one that strikes fear, and possible laughter into the hearts of mortals. This is the return of the feared god Chaos. Wait, you wanted the movie Chaos Theroy? Well screw you. No, I don't have the Splinter Cell game either.
Formal definition of chaos theory
Chaos theory suggests that small perturbations can have large consequences. A simple formula for chaos theory is S=Y\42x(T+V). In this equation Y is you and the shit that has happened to you. T is the amount of time left on your clock to midnight, and V is the variable for your virginity (a virgin equaling 0 and non-virgin equaling 1). All this equals S, which is the shit that is going to happen to you in the rest of the day. For example if it's 10 pm, you're a nerd and haven't been laid, and you stubbed your toe today the formula would look like this S=-3\42x(10+0). In this equation S would equal 6, meaning 6 shitimeters (one of the standard shit measurements) of shit will happen to you in the next two hours.
In case your small pitiful brain could not comprehend all that utter knowledge and complicated stuff, it pretty much says: "Yes OJ did it, Bitch!"