As stated above, used to describe grace, balance and poise. Cats form the most common example.
Once again from super-troopers:

An adjective used selectively to descirbe what is leftover in a mans testicles after ejaculation.

1. adj.- of or relating to when a member of the female species cannot coherently make a rationalized, realistic decision pertaining to her personal relationships

2. adj.- flip-floppy; uncertain

3. adj.- of or relating to the female species as a whole

of great grace and speed: often used with a good take off and landing.

From the movie Super Troopers, used to describe a cat's agile movement.

n. fluid, mobile, flexible

The privilage to be nimble.

It is not a right and cannot be earned.