You've taken a Myers-Briggs personality inventory before right? They are usually strings of yes-or-no questions that give you a result like INTJ or ENTP.
These kinds of tests populate the internet, and for what they are worth they are fun time-wasters and moderately gratifying. This one is just funny. It reframes the descriptions of the resulting personality types.
For example, I usually get classified as a INTJ -- under most classifications it is called a Mastermind. Under this classification here is my description:
INTJ: The outside contractor
INTJs are solid, competent personalities who may seem aloof and even arrogant, but who are typically highly skilled in any field which interests them. INTJs are confident in their skills and knowledge, self-assured, and imaginitive; their exceptional problem-solving skills make them ideal architects, auto mechanics, and tools of the evil empire. While it requires the driving will to conquer of an ENTJ to imagine the Death Star and the evil genius of an ENTP to invent its devastating weapons systems, the skill and technical prowess of the INTJ is what makes the whole thing work.
The INTJ sees life as a problem to be solved. For that reason, the INTJ is the person a company brings in from the outside to streamline production processes and identify redundant assets for termination. The INTJ's combination of analyticial problem-solving skills and complete and utter disregard for the morality or consequences of his actions also make him ideal for the job of hatchet man, CIA operative, and helpdesk operator.
RECREATION: INTJs are often baffled by the strange and incomprehensible recreational rituals of other people, such as going to parties, watching television, and having sex. Instead, they prefer to spend their leisure time installing twin missile launchers in their cars to deter tailgaters and playing chess with megalomaniac CEOs of the Tyrell corporation.
COMPATIBILITY: Silly person, INTJs don't have relationships! They may, however build their own friends.
Famous INTJs include J. F. Sebastian and Sgt. Apone.
Here is another one, probably rather common for the people reading this site, the ENTP:
ENTP: The Mad Scientist
The ENTP, like the ENTJ, is charismatic, outgoing, and intelligent. ENTPs are often quickwitted, clever, and genial; they typically display a highly organized, rational cognitive ability which makes them natural scientists and inventors.
ENTPs are creative, complex people who seek to improve their understanding of the natural world, usually by building armored fifty-story-tall robotic monsters with iron jaws and death-ray eyes, or by creating genetically mutated plagues that spread unstoppably across the land, turning all who are contaminated into mindless zombie drones. They are less likely to want to conquer the world than to destroy it utterly, reducing it to nothing but slag and rubble--though this is often merely a side-effect of their pursuit of knowledge.
RECREATION: ENTPs enjoy recreational activities which challenge them physically and intellectually, such as water skiing and porting Linux to their iPods. They are also fond of collecting gadgets like combination cellpone/PDAs and orbiting arsenals of brain lasers, which they may port Linux to as well.
COMPATIBILITY: ENTPs and ENTJs make natural companions, as the one's unspeakable hunger for power complements the other's unspeakable hunger for knowledge. They do not generally build successful relationships with ESFJs, as ENTPs they are prone to behaving in inconveniently erratic ways, which pisses ESFJs off to no end; and because ENTPs simply do not know how to dress appropriately for formal occasions.
Famous ENTPs include Spencer Silver (the inventor of Post-It Notes), Robert Oppenheimer, and Dr. Jeckyll.
They have a link to the test on the website, so you can take it and find your description. Have fun.
ISTJ: The Thought Police
ISTJs are characterized by loyalty, duty, and civic responsibility. As an ISTJ, you have a natural understanding of the value of civil harmony and order, and a deep-seated dislike of non-conformity, anarchy, and chaos.
For an ISTJ, work is very important to a sense of self-satisfaction. Happiness comes most easily for you when you have a job that allows you to express your ethic. Whether it's blasting traitorous rebel scum as a proud Imperial Stormtrooper or monitoring the population's cerebral implants searching for evidence of unauthorized thought patterns as one of the Thought Police, you're most satisfied when you are crushing the population beneath the iron boot heel of oppression on behalf of your masters.
RECREATION; ISTJs approach leisure with the same dedication they bring to spreading tyrrany and oppression. Common ISTJ pasttimes include cleaning their rifles, improving their marksmanship, betting on political dissidents in the Gladiator Arena, and macrame.
COMPATIBILITY: ISTJs are capable of stong emotional connections, bonding closely with the other ISTJs in their unit, platoon, or sector.
Famous ISTJs include TK-421, Torquemada, and Yuri Andropov.