The most important thing you can have. Without fitness, your a fat homosexual who sits around all day watching movies on your computer and eating cheezits. To be fit is to be god.
Can also be used to replace words like "good", and "skilled"
A fictious internet show frequently mentioned by the Cinema Snob involving the host shoving various items up his ass and gauging if it fits well or not
Example: "Hey John did you catch the last episode of Will It Fit?"